Obsessive-Compulsive Disorder and salivating

I have OCD, and when I think about my mouth, I salivate. This has ruined my life. I can no longer do normal things like talk or sing. This has gone on over two years. (See my page at http://raggedtiger.tripod.com/ocd.html for more info.)

My current psychologist wants me to ask around and see if it is actually possible for a person to make themselves salivate. He wonders if I am possibly just moving the existing saliva around in my mouth so that it *feels* like I have more saliva than normal.

Let me know if this makes sense, and if anyone can help. Thanks.