OCD is horrible!!! And panic and anxiety, too! Have you tried reducing sugar and caffeine, for starters? Sometimes that can help. You might check out http://www.ocd-free.org for some info, if you want to avoid medication (if you're not already on it). I haven't tried their advice yet, but I plan to. They suggest vitamins and other things that might help.

If you're ok with trying medication, you should get an appointment with a psychiatrist or a mental health clinic and see if they'll give you some. There are side effects, but it can help.