Ask Our Doctors

Supporting Your Journey

Our Medical Directors are outstanding physicians that you will find to be very personable and compassionate, who take care to ensure that you have the most cutting-edge fertility treatments at your disposal. This is your outlet to ask your questions to the doctors.

  • Dear Patients,

    I created this forum to welcome any questions you have on the topic of infertility, IVF, conception, testing, evaluation, or any related topics. I do my best to answer all questions in less than 24 hours. I know your question is important and, in many cases, I will answer within just a few hours. Thank you for taking the time to trust me with your concern.

    – Geoffrey Sher, MD

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Answers from our doctors

Search 1,006 questions patients have already asked, or narrow them by topic.

  1. Age & Fertility

    Stimulation with LH in older women

    Dear Dr. Sher, thank you very much for all the things you do for our community of fertility warriors. I have heard that gonadotrophins stimulation in older women with low ovarian reserve should only be done with FSH and no… — Shira M.

    Dr. Geoffrey Sher answered

    It is primarily the egg (rather than the sperm) that determines the chromosomal integrity (karyotype) of the embryo, the most important determinant of egg/embryo competency”. A “competent” egg is therefore one that has a normal karyotype and has the best potential to propagate a “competent” embryo. In turn,…

  2. Embryos & Genetic Testing

    Thin Endometrium

    Hello Dr., I am currently 36 with unexplained infertility. We sought help in 2019 and ended up with a successful IVF cycle, 7 PGS -tested normal embryos (1 day 5 and 6 day 6). We transferred our day 5 embryo… — Natasha B.

    Dr. Geoffrey Sher answered

    Obviously I cannot with certainty define the cause of your thin lining. I can tell you 2 things: 1. A lining of

  3. Ovarian Stimulation & OHSS

    Back to back FETs

    Hi Dr Sher, I've just had a failed medicated FET. I have now stopped all medication and am waiting for my period to start. I want to do my next transfer as quickly as possible and I'm keen to try… — Anne-Marie D.

    Dr. Geoffrey Sher answered

    The answer to both questions is yes! However, I am not a proponent of natural cycle FET. See below: Until less than a decade ago, most women undergoing IVF would have embryos transferred to the uterus in the same cycle that the egg retrieval was performed (“Fresh” Embryo…

  4. Egg Health & Ovarian Reserve

    DOR Protocol Suggestions

    I am 41.5 with DOR. I'm desperately looking for advice on what would be the right protocol. I don't believe BC helps me. I had 2 months cancelled when on it for cysts. 1 estrogen producing and the other was… — Kodi F.

    Dr. Geoffrey Sher answered

    I cannot provide you with a specific protocol via this venue. I can only do so for an active patient of mine. You would need to contact my assistant, Patti Converse at 702-533-26912 and set up an online consultation with me for this. However, below please find the…

  5. Immunology & Implantation

    Recurrent miscarriage

    Hi Dr Sher, I wish you had never left South Africa, as that is where I am from. I am 33 years old, we went to do ivf as my fiance is paralysed. He was placed on meds to improve… — Yvonne W.

    Dr. Geoffrey Sher answered

    I really sympathize with your predicament but there is no substitute for an appropriate and comprehensive medical evaluation of your problem....especially when it comes to an evaluation of immunologic implantation dysfunction. I urge you to download a free copy of my E-book , “Recurrent Pregnancy Loss and Unexplained…

  6. Ovarian Stimulation & OHSS

    Review my protocol

    I was wondering if you had online consults to review my records and previous protocol? I just finished my first egg retrieval with 7 eggs.. 3 immature 3 overmature and 1 fertilized but didn't make it past 2 cell. My… — Erin R.

    Dr. Geoffrey Sher answered

    I would be honored to do so! Please call my assistant, Patti Converse at 702-533-2691 and set up a consultation with me. The importance of the IVF stimulation protocol on egg/embryo quality cannot be overstated. This factor seems often to be overlooked or discounted by t IVF practitioners…

  7. Embryos & Genetic Testing

    Where to go after 3 rounds of egg retrieval

    Hello Dr. I have had 3 MCs ( chromosome issues) 3 rounds of er, in total 34 eggs, 23 fertilized, 5 blasts no euploid, 1 failed fresh 3-day transfer. I am 40 started all this when I was 38. My… — Desiree B.

    Dr. Geoffrey Sher answered

    There is really a great deal to talk about here. I strongly urge you to call my assistant Patti at 702-533-2691 and set up an online consultation with me. Given your history of 3 losses I think that aside from an egg/embryo quality issue you could, in addition,…

  8. Male Infertility

    Sperm retrieval

    Hi, My partner and I have had a friend that was successful at your clinic (Michelle and Steve Christie) and we are exploring a child together but do not have the funds to have it not be successful going back… — Kristen S.

    Dr. Geoffrey Sher answered

    Here is some information on : Previous vasectomy and IVF; Gender selection and Endometriosis and infertility. We should talk,. call Patti Converse (702-533-2691) and set up an online consultation with me. 1. GENDER SELECTION Couples have for centuries sought to influence the gender of their offspring. More than…

  9. Embryos & Genetic Testing

    FET protocol

    Just wondering if you see any pitfalls in doing a simple oestrogen/progesterone protocol. I asked about adding in prednisolone, as a precaution. But the clinic is not keen using steroid medications- such as prednisolone, in patients who do not necessarily… — Cassidy C.

    Dr. Geoffrey Sher answered

    Perhaps we should talk! 702-533-2691

  10. Infertility Basics

    fluconazole safety

    Hello Dr Sher! I've taken this drug to treat thrush, 150mg. I'm getting my period is 8 days and am planning to start FET protocol - but I've since read that it's not a safe drug to take when trying… — Cassidy C.

    Dr. Geoffrey Sher answered

    THERE WOULD IN MY OPINION BE NO PROBLEM!

  11. IVF Failure & Pregnancy Loss

    failed ivf

    i'm 40 years old,my AHM is 0.89. i was undergoing an ivf which failed. they got 6 eggs,5 mature,i embryo was slowly groing ending up not sticking after transfering. later the doctir told me they examined my eggs and came… — Tammy S.

    Dr. Geoffrey Sher answered

    It is primarily the egg (rather than the sperm) that determines the chromosomal integrity (karyotype) of the embryo, the most important determinant of egg/embryo competency”. A “competent” egg is therefore one that has a normal karyotype and has the best potential to propagate a “competent” embryo. In turn,…

  12. Hormones & Ovulation

    Hoshimoto’s question

    Dear Dr. Sher, I've been following your comments for years. Thanks for the info. on 2 shots of Ovidrel. I'm interested in what you say here about Hoshimoto's and what you call "Immunologic Implantation Dysfunction." You mention that 50% of… — Katharine C.

    Dr. Geoffrey Sher answered

    I published on this 25y ago. Sher G, Maassarani G, Zouves C, Feinman M, Sohn S, Matzner W, Chong P, Ching W. "The use of Combined Heparin/Aspirin and Immunoglobulin G. Therapy in the Treatment of IVF Patients with Antithyroid Antibodies" Am J Repr Immunol, 1998; 39:223-5.

  13. Egg Health & Ovarian Reserve

    No normal embroys

    Hi Dr. Sher, I am asking this question after first egg retrieval. I am 40 years old, first time doing this IVF. I saw about 23 follicles during ultrasound and was on 21 days lupron protocol ended with 20 eggs,… — Esther L.

    Dr. Geoffrey Sher answered

    The importance of the IVF stimulation protocol on egg/embryo quality cannot be overstated. This factor seems often to be overlooked or discounted by t IVF practitioners who use a “one-size-fits-all” approach to ovarian stimulation. My experience is that the use of individualized/customized COS protocols can greatly improve IVF…

  14. Embryos & Genetic Testing

    I need your advice. I have had two failed embryo transfers

    I need your advice. I have had two failed embryo transfers. I had my embryos PGT tested and they were normal and very high-quality embryos. I am 37 years old with no underlining health conditions. But maternal history of endometriosis.… — Vanessa A.

    Dr. Geoffrey Sher answered

    antibodies (APA) that can compromise development of the embryo’s root system (trophoblast). In addition and far more serious, is the fact that in about one third of cases endometriosis, regardless of its severity is associated with NKa and cytotoxic uterine lymphocytes (CTL) which can seriously jeopardize implantation. This…

  15. Egg Health & Ovarian Reserve

    I would like to ask you about DUO stim protocol for women with DOR

    Dear Dr. Sher, I would like to ask you about DUO stim protocol for women with DOR. Is it OK to have double stim within the same menstruation cycle? I have DOR, endometriosis stage 1, MTHFR, 35 yrs old and… — Ola

    Dr. Geoffrey Sher answered

    Respectfully, I am not a protagonist of Duo-stimulations. In my opinion it can compromise follicle development as well a jeopardize egg/embryo “competency”. Geoff Sher

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