If yiu are pregnant, try not to stress (iknow that it is easier said than done) stress is not good on any pregnancy. Try to look at it this way, you are probably better off with out him after all look at what he has done to you, he did not even have the guts to tell you, if I were you, I would go after him for child support especially if he is working and note that we are here for you, it sounds like you deserve better. Yes, being a single parent can be scary but so can having a guy that cheats on you. You are not alone on being a single parent, you just do the best you can.
The father does have his rights, true. I do wish you the best!