We're due within days from each other. Technically we're in our fifth month. I had a woman ask me the other day, if I was only about two or three months pregnant... when I told her I was in my fifth month, she said, "OMG... you must have been really tiny when you got pregnant. And this is my third child. So, to answer your question, it's perfectly normal to be as small as you are still.... especially with your first baby. The uterus doesn't distend as easily the first time around. Plus, your little one could be more towards your back side which will also cause you to have less of a bump. Don't worry, you'll get there soon enough... and when you do, you'll be dying to get back into your size 6 jeans.