I don't really know what to do!!!!!!

My boyfriend and I have been together now for 21/2 years. I got pregnant the first time we had sex due to the fact he thought he was sterile and I had cervical cancer at 18 and was told I wouldn't either. He is 37 and I'm 26. The problem we are having is so bothersome that I have a hard time concentrating on my days or myself.

When I got pregnant we decided to move in together thinking its for the best, and we argued quite a bit which I think is due to the fact that we'd only been dating for 3 months and were still getting to know one another. He refused to have sex with me saying it was because we would hurt the baby and I was high risk but the doc ok'd sex till 3months along but nevertheless it never happend.
I had my beautiful son 6 weeks early and yet perfect, so I figured this would strethen our bond and at first it did. Then he started drinking quite a bit and leaving me to tend to our son alone most nights till I started school again.
Now I'm an RN student and our son is 17 months old. I'm very frustrated that he never puts him to sleep, HE NEVER gets up with him (he still wakes 2-3 times a night) if I'm home he calls me to the room our son's in to change the diaper and he's had several nights out and I have had none since he was born. He tells me I've gained weight since our son which is true but I'm only a size 14 jeans from a 9 pre-baby. When I try to talk to him about helping me out more he never wants to talk and then turns everything on me blaming me for it all. I can't get him to help me hardly with our son unless I am at school or clinicals and he's forced to do so. I only get sex maybe once a month if that. He goes from a great guy one day to everything I do is wrong the next.
I love this man very very very much, but I wonder if I love the man I thought he was at first. I no longer look forward to going home at night. When my son is winey (which is quite often terrible 2's and all) he is griping that he is winey. I cry everyday from stress and I feel alone. My family is 2000 miles away so I have no one close to go to.

I just don't know what to do or say, when I try he breaks me down and picks me apart and I let him. If anyone has any advice please let me know. I know somewhere in there is the great man I fell in love with but I'm at the end of my rope. If anyone has any advice just let me know.

Do you know his family at all? Know anything really about him? I would see if there are other student moms and see if I could join a group of some sort, take as much pressure off yourself as you can.

It doesn't sound like your boyfriend is responding well to being a father/having a girlfried who is a mother. I don't know that you can get back that part of him you enjoyed when you all were first dating.

I would figure out a way to take care of myself and son. Doesn't sound like you'll get much besides "breaking down" from him. Get in a good support position and then confront him to see if he's willing to go to counseling or help more or change in any way. Your weight shouldn't have much to do with anything. It's not like you're lying around doing nothing but eating bon bons! Get support for yourself, however you can. Favorite teacher you can talk to? Your own counseling at school?