Hello, Hannahmo, and welcome to Psych Central! I loved my college experience. The important thing is to get out there and meet people--join clubs and organizations, etc.
If you scroll down to the forums here, then you will see that we have ones for the different disorders you mentioned. There's where you will meet folks who can relate to your feelings.
We also have a School and Study Issues forum. Here's that link:
http://forums.psychcentral.com/school-study-issues/.
And even a social group for college students that you can get involved in. Here's that link:
http://forums.psychcentral.com/group...-students.html.
Members can join social groups and enter chat rooms after they get five posts approved.
Does you college have an orientation program? That can be a way to meet people and find out resources. And they will have counselors, too.