My friends wants me to come to her house, I don’t want to.

For background, I’ve never really had friends and I have ocd. (That will be useful later)

My friend which I have been friends with for a year always comes to my house but I never went to hers. She hadn’t invited me yet so it wasn’t an issue but recently she’s been trying to invite me over a lot. “Hopefully” my foot was hurt so I just told her that I couldn’t come because of it. Now I’m getting better, “hopefully” so I can’t use that excuse anymore. Thing is, I don’t wanna go, ever. I’ve never “really” had friends since I was 11 (I’m 18). I don’t feel comfortable with people I don’t know and if I go to hers house, her family will be there. Also, I have ocd and I just can’t handle the smell of peoples houses, touching their things and so on.

Now what am I supposed to do??! I can’t just tell her I don’t feel good going to peoples home because she will take it personally…