Feeling Huge

went to try on some summer dresses and i felt so terrible. I almost broke down in the changing room, nothing fits. I used to be a small, now not even a large fits me. I'm 38 weeks today, i just ended up buying 2 pairs of shorts and sandals so i didn't walk out with nothing after looking for a dress for almost an hour. I really hate my body, i know i'm carrying a baby. But i had such problems before about my body, even though i was so tiny. Now i have to work even harder to get back to the size i was.. Just don't know how to feel better about myself, sitting here crying alone. I just hate the way i feel,