Ughh!!

Can you lose weight while pregnant?? My first child I lost a ton of weight and the got pregnant, first time I was weighed at 11 weeks pregnant I weighed 173. Smallest I've ever been.. Now 7 years later I recently lost 10 lbs but now I'm back to 223 and I'm 6 weeks pregnant.. I've never been so big in my life and it's totally depressing.. Can you diet while you're pregnant? I don't want to hurt the baby and I'm so Afraid of gaining more weight while I'm already uncomfortable and I have some