hi and welcome! many of us have similiar triggers from childhood and also suffer socially due to it. i am a mom so I force myself to do something's but otherwise have no life. no dating. no boyfriend. I hide when my son isn't here. shame because I am smart and pretty and should have a damn life.

if you feel like staying home is best do it but I think going to the party would be a good distraction. there will be bathrooms. you can just eat lightly. and I do agree that it sounds more like he drank/ate/played at the fair too much and overdid it.