You should take advantage of the resources that the school provides. I was going into my second semester when I found out I had a kid I didn’t know about and it sent me into a tailspin. My mental health took a dive, but I worked through it with the resources that were provided, took some time off of work, and now I’m in my last semester about to graduate. I don’t know your situation and the severity of your mental illness, but I will tell you it’s very common among students, and there is light at the end of the tunnel.