Positive ANA

Hi, I am ANA positive (as well as Smith (Sm) Ab, Sm RNP and Centromere B Ab Positive), I have had a chemical this year in March, a blighted ovum in June at 7 weeks, and then a MMC in September at 8 weeks. For the MMC I started lovenox a week after finding out I was pregnant. I am on baby aspiring all the time because of being ANA positive. The 3 pregnancies this year were all without IVF, but before transfering a frozen embryo I wanted to ask if you think taking lovenox from before the transfer in addition to baby aspirin will be enough? Or if I should try to get my doctor to add IVIG? What is the difference between what they do or do they both do the same thing and taking lovenox will be enough hopefully? I also did a 2 week course already of doxylin to clear my system.
Thank you