How to tell your mom and dad

Mary
I grew up a preachers daughter and having sex and living with someone before marriage is a sin. Well I'm engaged and our wedding is in September but we found out I'm pregnant! We're excited and my in laws are thrilled but I haven't told my mom and dad yet (they also live across the country in Michigan & I now live in Texas with my fiancé) I told her I had a miscarriage before and she said " I knew you shouldn't of moved down there you'd end up having something like that happen" all she did was be disappointed in me. How do I tell her and my dad now? I was going to wait till Father's Day and tell them because her birthday is on Father's Day and all. I'm afraid that my mom will just be irritated or mad. I'm 5 weeks 2 days according to my dr. Go in for my first ultrasound June 1st. What should I do?! Anyone ever been in a situation similar???