my aunty has it and they said yes thats what was causing her misscarriages, they monitored her closely soon as she got a bfp she was put on special meds, but didnt help
her first baby was stillborn at 37 weeks, they did testing found out she had thrombophilia,
after a year or so she got pregnant again but monitored and ended up with a healthy bub, then after that misscarriage after misscarriage and thats when they found out she had factor 5 leiden, they said all the women in the family had to be tested and no one is allowed on birth control meds or any kid because everyone is at high risk with taking them in the family. cause if theres a chance anyone else in family could have it taking birth control can cause you to get it if your already at risk