Hi There,
God - you are in a mess honey. I can totally understand that you want to create a family for your baby, but I think that the first and most important thing is that your baby needs a strong Mom. I think that at the moment you are trying to hide your thoughts in the drama of relationships, instead of facing the reality of your pregnancy.
Take some time to find out a bit about yourself, away from all this love life stuff. Your children are going to be the most important thing you do with your life, believe me I know.
Find some people, your family or friends, where sex isn't a factor. If you get the support of those who love you unconditionally then it will be easier to work out the road ahead. Keep posting messages.