6 weeks pregnant and getting married..

I am getting married on May 18 to my loving fiance. We just found out a couple weeks ago that we are expecting a baby..I'm 6 weeks and 5 days today. My biggest concern is telling my parents..my mother in particular. My mother and I have always been close but she has very high expectations of me and I know she will be disappointed in me as my parents are both religious. I want to tell her before the wedding because it's killing me to keep this from her. I want to be able to talk about this with her and have her support because she's my mother..sorry for the long post..any advice?