Hi,
I went through the same thing with my first baby.
During the pregnancy he walked in and out, and it hurt so bad.
Finally, I realized that my baby was much more important than that a**hole, and didn't take him back.
My son is now 2 1/2 and has only seen is dad once.
Everything worked out for the best, because now I am married to the best man ever and we have another child.
If he leaves now with the "thought" of a baby, he cant handle the reality of a baby. Think it through for the future.
Good luck.
Marissa