Aggravation, stress, and tears.

I recently just found out that I am pregnant this Tuesday that just passed. I have a child from a previous relationship and my fiancé has a child also from a previous relationship. One second he is fine and then the next, we are barely speaking and he isn't showing me any affection. His biggest concern is financially being able to support our unborn which is comepletely understandable. I do need to look for a better job with more consistent hours, but my pay rate is fairly decent (I am a manager in retail). I am also in school full time and so is he. The last thing that I want to do is terminate the pregnancy, but I also do not want to struggle and feel as if I am in this alone. The comments that he has been making are really starting to piss me off. He first made a comment about me eating a bag of chips and telling me that I am being selfish and not carrying about the well-being of the baby (keep in mind that he also brought home a bag of candy for me that I didn't want nor asked for). Secondly, I was looking at baby furniture last night and he made a comment saying that he thought that it was odd that I was so excited and that he hopes that I put that kind of excitement into finding another job and working out. I am livid at this point! To any moms that have struggled financially at one point or another, do you have any advice? Any ways, tips or tricks to make extra income? My due date is in October, so I definitely have plenty of time to save money, but I just need some words of encouragement.