It might be a good idea to look around and hook up with a 'young parents' program in your area if there is one.

I'm not sure why you think it might have been a problem to list him on the birth certificate, but if someone told you it would be (and also your ages being a problem), I would seek to get advice from someone that actually knows....not someone that might blow the wind up you.

There is plenty of help around here - Welcome to BB.