The transition young people make from high school and living at home to going to college and living away from home is a huge step. It's one of those "growing up" moments that, along with a lot of new-found freedom, comes with responsibility and a lot of life-changing stress. For all young adults, whether diagnosed with obsessive-compulsive disorder or not, it's a tough time to get through emotionally.
The good news is that even with OCD, you probably aren't going through many more things than most of the others your age who are making the same transition are going through. Most of the trials, anxieties, and fears you have are the same as those of your peers. So don't add to them by worrying about how your OCD will react.
Manage Stress
Stress and anxiety are the biggest triggers of OCD, so if you manage your stress in the ways you've learned to, your OCD will remain in the background as you make this big life step and begin entering the world of adulthood.
Get enough sleep, exercise, healthy food, and emotional outlets. Talk with your friends about their fears and anxieties (and excitement).
Lighten Your Academic Load
Be sure to consider your own needs and specific issues as well. If you've had academic trouble in the past - especially if it's been a trigger for your OCD - consider starting out your coarse load a little lighter for your first couple of semesters. This might "slow you down" in some people's eyes, but it could be the best way for you to be sure you aren't over-burdening and stressing yourself.
Avoid Drugs and Excessive Alcohol
Avoid the pitfall that many college students fall into, with or without OCD. Substance abuse and "partying" are common problems that affect college freshmen who are living away from their parents for the first time. It's OK to go out and have a good time, but don't make excessive drinking or drug use a part of that. These can become serious problems that may be even worse for people with OCD. You may also be taking prescription medications that will not mix well with these added substances.
Stay Healthy
Find a medical health network in your area to keep your mental and physical health on track. Augmenting or replacing your support network from home while you're in school is very important.
In the end, though, the transition to college is a good one for most young adults. If you avoid serious problems and don't let your fears and stress get to you, you'll be just fine.