I get sick everytime I come home from college help!

I’ve always been very sick with various symptoms as a teenager such as vertigo m, migraines nausea depression anxiety vision issues, balance issues, rashes etc. when I went away for college in August they all started to fade away like after a month of being there. Now every time I come home I get sick within a day. When I go back to school it takes a few weeks to start to feel better again. What should I do? We have tested for mold. I’ve seen many doctors. Could it be my house??? Help I’m home for a month and I’m already so sick can barely walk due to vertigo and been having panic attacks after not having them for months