Getting married in 6 weeks just found out i'm pregnant

Rhiannon
So I'm getting married in 6 weeks, on August 12th. I just found out i'm pregnant and i'm guessing that I'm 4 or 5 weeks along. Will my dress still fit? I've always been very petite and my dress is a size 0. Also any tips to make the bump not noticeable or to not grow so much for a couple of weeks would help a lot