[stars-sparkle]

Your fiancee proposed to you and now she is pregnant with your kid and you are the one who isn't ready? Urgh, this is the kind of situation I deal with case studies about all the time...

You need to either get therapy and grow up or run away like you are eventually going to anyway. It sounds like your fiancee has come on a little strong - she proposed instead of waiting (and at 19 this is pretty unusual behaviour btw) and now she is pregnant and wishing to keep it.

Is she worried you are going to run away? Is that why she proposed? What contraceptive methods were you employing before she got pregnant?

I mean, you were having sex ergo I assume you knew the consequences of this were: pregnancy.

Time to man up and face your responsibilities, even though they have been pretty much forced on you (probably the source of your resentment).