It is normal. This is your first baby right? Before DD was born I felt like that. I think it's the unknown because you've never done this before. It's also drawing near to the end of your pregnancy journey. And you are full of hormones which throw your emotions and rationalism out of wack. One thing I've learnt now that DD is almost 10 months old is that the first year of having a baby is not "normal" because if its your first you're doing something you've never, ever done before. Becoming a mum is a scary and rewarding thing. I've found that all my pre-conceived ideas about motherhood have flown out the window. I think you should only be concerned if these feelings extend beyond the first 6-8 weeks of your childs life, then it's not normal.