UGH!!! I am recently engaged (2 weeks ago but still on cloud 9 somewhat) and what should have been one of the happiest days of my life has been crushed torn butchered and slaughtered.

great combination huh?
My parents dont like my choice of marrying my FI. When I finally was brave enough to tell my parents I was engaged the first thing my mother does is bawl like a baby and ask me why? are you even sure? why, why, why, why, you would think I had killed someone and told her that I did. My parents and I had a "serious" talk aka them lecturing me and telling me all sorts of BS that if you get married its going to be your mistake to live with when 10 years or less down the road you regret doing this and realize how big of a mistake you made marrying and enlisted poor boy. They lectured me for a good two hours. Telling me everything my FI has ever done wrong in their eyes, telling me how poor he is and how we will never have a good life and will live in poverty forever. (thats not going to happen mind you we are both finishing up college debt free, we each have a savings account with plenty of safety money, I will be a nurse in the labor unit he an electrical technician) anyways, I got so sick of what they were saying. When they were finally done they threw in something that hurts me more than I think anything in this world ever will..... they said " We think it wise you not share this "news" with anyone until you are positive you want to do this and are willing to accept the outcome it will bring! Oh and dont wear your ring around people we know either so you can save yourself the heartbreak and embarrassment that will come when this ends badly."
OUCH that was such a huge smack in the face. My parents have always been very controlling of me (military father with 30 years service, mother who is 100% submissive to my father no matter what) so it didnt surprise me when they reacted the way they did, still hurt though. I am the baby and I am still living under their roof due to college and all the expenses that come with that. I have been able to survive and put up with all their BS since I can remember but this, this has crossed over way too many lines.
They have me so upset and so mad that I am thinking of just leaving them period and not even let them come to my wedding. Anyone else ever had a nightmare of a family try and ruin everything about this special time? If so how in the hell did you survive?