I agree with what Alison has posted and also wanted to add that your future does not need to be put on hold because you have a child. I think this is the biggest misconception. It may take you longer, you may have to ask for help watching your child but it is definitely possible. I went to nursing school with many women who had children, some of them were even pregnant during the process-- and they are all very successful women, not housewives. It takes a little more effort on your part but in the end it's rewarding to realize you were successful in not only being a mother but also in getting a degree.
I definitely think you should seek some sort of counseling or therapy about your strong negative feelings towards your pregnancy. Not only are the next few months going to be filled with a whirlwind of hormones, but the postpartum period can be very difficult to deal with for some as well.