Bicornuate Uterus

Iv just read an article about having a bicornuate uterus, and till reading it I never realised that, having it could of been the main reason I had my eldest 2 daughters early as I was never told this by my doctor. Iv just found out I'm pregnant again and I will be asking my doctor about all the risks this time as with my eldest 2 I bled through my pregnancy too and ended up having them both early, 1 was 8 weeks early and other was 6 and half weeks early xx