I too have OCD that (untreated) has gotten worse over time. A couple of professionals have told me before that OCD responds very well to treatment. Therapy and medication. If you are really struggling, as it sounds you are, maybe you should get some help. It can really become a debilitating condition and does nothing positive for you self-esteem. I've been told also that although it is very common for people with AS to have OCD, it does not have to be the case. For me, I know that it was not always a part of my life, so I know that it is not intrinsically intertwined with my AS, so is treatable.
Goodluck TeeHee. Take it easy on yourself, it really is an awful beast.