i m 26 years old.i do not have any issue but i have two miscarriages. these miscarriages happened in 10-12th week of conception . my usg of pelvic organ , tsh, t4, prolactin , aniticardiolipin anity body and anti phospolipid antybody are normal.i want to know whay these was happened.i m trying to conceive now. what should i do to prevent this unexpected miscarriages.