then contact him but be calm and collect so you dont start talking in berserk mode if you get what i mean.

what you 2 need is a heart to heart talk that will need a lot of respect and understanding. anger will just be a catalyst for disaster in the end if you guys let it rule over. your main aim is to resolve this and to come up with a clear direction that the 2 of you will take. be it together, separate (i hope not), and whats best for the baby since the baby is totally innocent here (i mean its not like the baby did anything to be in that situation right?).
when you 2 talk tell him he also has to be calm and collect to achieve this goal in solving the issues.

your doing your part to be responsible and trying to work things out, so he has to do his part as well. if he doesnt then you know your answer already.
in a way i agree with gymgirlie also, but im kindda taking to less action packed approach and im still giving him the benefit of the doubt (but you know hhim more so you get to see the better view on this if he is truly is worth your efforts).

so in your waiting period plan out what you also want and need to do for yourself just in case he does turn out to be a useless guy.