I'm assuming you are in the states, in that case, I can't say I have too much input on the matter. But I will say that your College doctors are there to help you, and are pretty good/cool people used to dealing with students. I got in a little shit for smoking weed on the University property, and they forced me to see an addictions counsellor, that was in October. I haven't smoked weed in 11 days with her help, and the help of people on here, and my own need to stop. I also am seeing a psychiatrist there who has been very understanding and NOTHING like this one I saw back in January, 2008, who said, you don't have a problem. Oh ya, thanks buddy, developing HPPD, PTSD, SAD, Depression.
The only gripe is that this one guy is all about the SSRIs, which won't really help my HPPD, which the PTSD stems from, and is now my biggest worry. Stopping weed has helped with SAD and Depression immensely. He's good though, he is waiting until I'm off all drugs for a month until he gives me any medication, and he is very reassuring and kind, and I was able to tell him about a lot of my drug use, and he still is considering benzos if SSRIs/sobriety do nothing for me.
Eh, sorry I'm way off topic and just talking about myself, but my point is the university/college doctors are really good and understanding, haha.