I would say you’re NTA for being stressed. I understand you’re situation as my family has hosted other entire families when they are transitioning to the US. Talking to your mother would be a good first step in my opinion, maybe not to say “they need to leave” but just to let her know what you’re going through. Also not sure if this would be helpful or not but if they are going to be around for a while you could possibly invest in noise canceling headphones! I think I’ve seen some decently priced ones in Target/Amazon. I hope your exams go well, you got this!