Yeah it can come and go. A counselor once told me that its possible for OCD to increase if the stress level in your life increases. He told me that OCD is a manifestation of anxiety that occurs when you don't choose to face the problems in your life and solve it. That's his theory though, some have said its not true, some have said its true, I dunno.

It could be that there are new problems that are coming into your life and you aren't necessarily aware of it. A good thing to do is to take a pen and paper, and then list out every single problem that is troubling you right now. Explore your mind and list all the problem. Then write down how you can solve each problem right next to it. That might make you feel better.