Do you have someone to talk with? Someone to support you emotionally? The feelings you are experiencing sound pretty 'normal' given the circumstances you describe---
It does sound like you really need something that will relax you for a time each day (?exercise, yoga, dancing/music...a meet up group/school club/activity?)---something just for You---one hour in which you allow yourself to be free of responsibilities. Don't let the anxiety/panic stop you (I've lived with it for years, it really does make a difference to find a place/activity that absorbs you for a while--)