welcome to HCM,
read your prob,you have had 3rd misscarrige , n previously you had sever pre eclampsia
with you first child. ok may be this is due to anti phosholipid syndrom as you mention another symptoms like migrain, joint pain present in that syndrom.
in antipospholipid syndrom misscarrige occur before 20th week.
you should get one CBC , if you find thrombocytopenia
, you need further investigations.
discuss all these things to your doc n start proper treatment.
Dr aseem 9982583020