most common causes of 1st trimester abortion
are genetic cause, luteal phase defect(in your case as you mentioned ),hypothyroidism
,or any immunological disorder,and infections.have you dr. advised you forlupus anticoagulants and anticardiolipin antibody test.i think you doctor prescribed you right medications. please follow the advice.you may face such frequent abortions but chances of pregnancy
is good if you follow the advice given by tour doctor strictly.take care.