Getting married today and totally overwhelmed!

I'm 13 weeks and getting married this afternoon, but I feel like everyone has ruined it for me. I have severe social anxiety so it was supposed to be just me, him and a witness. My fiance's uncle is marrying us and his husband decided to invite their whole immediate family and guilted my fiance into going with it. Instead of standing up for myself I went with it and invited mine. So now there are 30 people who are going to be staring me down. On top of it we said we were going to spend the night before together since I have a three year old to stay with and being pregnant it's not like I could go out and have some drinks anyway. Well apparently he decided our plans didn't matter again because he went out last night. I feel totally ignored and hurt that knowing how bad my anxiety is he wouldn't stand up and say no to anyone. So here I am at 7:30 in the morning on my wedding day scrambling to get all the last minute stuff done on my own before 10 when my mother will be here to help with finishing touches. I'm angry and hurt and at this point I'm ready to have a meltdown. I just needed to vent ladies. I'm so wound up.