Hello! Total Newbie here!

So, a little bit about myself. I went vegetarian several years ago for Lent. I had a very good friend who was vegetarian. She encouraged me, and helped me learn how to make healthy vegetarian food. My blood pressure at the time was borderline high, but after Lent it was well below normal, and I felt good, but my husband didn't like not having meat, so I went back to being an omnivore after Lent.

Now to present time: I'm having issues with my blood pressure again, only this time, it's not borderline: it's high. I have decided that meat isn't worth having a heart attack over (it doesn't even taste that good!), and have decided to become vegetarian again (possibly eventually vegan, but I'm going to take things one step at a time.) It's been a week and I'm already feeling much better. 

The problem: My family loves me, but they are openly hostile to the idea of me being vegetarian. Like, my mother bringing home dinner and getting me a Big Mac, and my husband cooking three dishes for dinner and putting meat in every single dish. This from the man that usually makes at least one meat-free dish when he cooks. I realise that I am going to have to do my own cooking all the time (even though both of them will happily eat vegetarian meals as long as diet isn't mentioned) and I'm down with that.

Most/all of the people on this forum have had to deal with people feeling threatened by the choice they made to go veggie, and I am hoping to get some good ideas on how to deal (and even what not to do) with my family, because going back to meat is not an option, and I really don't want to turn this into a war. So, what would you do? What have you done?

tl;dr: I've become a vegetarian and my family is hostile. What would you do?