That is a tough situation and I'm sorry you're feeling so isolated even surrounded by family. It really hit me that you said you're afraid to go to the bathroom. That really makes me feel sad and I feel I've been in that situation before, but I can't remember.

All I can say is, stay strong and you can get through this! In my cognitive behavioral therapy always say to remind yourself, "You must bare the discomfort to gain comfort." So, muster up the strength to interact with the family even though you want to isolate yourself. This too shall pass and you will be back home, safe and sound.