taking meds for OCD, and skin picking got much worse...

I was diagnosed with OCD when i told my doc about my skin picking, finger chewing and a couple other things (always being afraid that food had gone rancid and I'd get food poisoning, being a germaphobe, etc.) while the I no longer worry about food and germs, the skin picking has gotten so much worse... i used to just chew my fingers and pick at black heads on my face, but since my doc put me on zoloft for OCD and mild depression, i do that, plus pick at my scalp (I currently have 8 scabs there i've been picking for a while now) zits on my face (7 spots right now) and i've even begun to scrape off a mole and a few freckles and I cant help but pick at my boyfriend's zits and black heads at night while he's sleeping... I know this is really sever, but i've been happier lately and am not worried about food or germs so i'm reluctant to stop taking the zoloft... any sugestions or any body else whose picking has gotten worse when taking zoloft or other meds for depression or OCD? thanks guys...