Hi Doctor, I Am 27 Married For Past Two Years.

Hi doctor, I am 27 married for past two years. Had two miscarriages one in July 2015 and the other in Dec 2015 both around 80 to 85 days. Both were heart breaking one. The first one was diagnosed as missed abortion,absence of fetal heart beat. But during the second pregnancy heart beat of 80 bpm was seen and was also diagnosed with hypothyroidism TSH levels at 6 in the 5th week and was prescribed thyronorm but still I miscarried at 80th day. As we were not satisfied with the present gynaecologist we consulted a new gynaecologist who suggested karyotype test, test for lupus anti coagulant and similar other tests. finally Happy that there were no issues. Still need to know what may be the reason? Now I am prescribed with thyronorm, evion, arginall and t ovaries for next 3 months. Are we on the right track? Scared of trying to conceive again. Please guide us.
I am B +ve and my husband is A+ve.