At any sign of cramping or abdominal pressure, get to your doc and make them check you to make sure your not in labor. They can stop the labor and prevent miscarriage. I take a really
vitamin and am on hormones for my autoimmune disorder but I did make it thru my pregnancies taking lots of precautions. You should be considered high risk because a miscarriage usually occurs in the first trimester and is unusual from 4 months on, that's my understanding from my experiences anyway.