I made the stupid decision to say okay when my mom asked me to come over for Christmas. She's kind of pushy and mean and I was afraid that saying no would set her off. I would be going to her house (with my fiance who has been just as safe as I have been, disinfecting everything and not going to see anyone or going anywhere except for his cashier job which has a lot of safety procedures set in place)
At her house is her, her husband (he's retired but I don't know where all he goes) she works as a corrections officer at a jail, and then my brother who still goes to school but wears a mask there. I can't attest for how safe he is though because before the pandemic he would always get me sick when I lived with them from never covering his sneezing and never washing his hands and just being gross all the time. 

My mom said she can test everyone using covid tests that she has at the jail. I said okay. However when I tried to look up if it's safe to visit people when they've tested negative a bunch of sources just says it still isn't safe...

I'd be in the same home as them and eating food they've made.

I don't know what to do guys. I'm really stressed and annoyed and angry and scared and I don't know if I should just bail out or what..