First of all, thanks for sharing. What you are going through can't be easy. I am hoping you get some support here. You should also talk to your friends and family and let them know that life doesn't always go as planned, that's just the way it is and you would really like their love and support. if they can't ubderstand that, try not to dwell on it and get the support you need else were. You can talk to someone at the hospital in labor and delivery and see if there is a mommy group you can join or any sort of support groups for single moms.
Hang in there! If you feel yourself feeling down once baby is here, do you best to reach out to people.
I am always around these boards. If you want to talk you can send me a personal message:)