I went through something extremely similar at the exact same age, moved to a new city and started college, and at the beginning it was really bad and I felt the same way you did. It didn’t suddenly disappear overnight, but with a therapist and medication my anxiety, depression, and OCD all started to disappear. Now, four years later, I am by far the happiest I’ve ever been and I’ve been like this for a while. Started coming off of the medication and even with less meds my OCD symptoms are way less than before. I know it’s overwhelming but trust me, therapy and time will help. You’ll feel much much better and realize how amazing life can be