it DOES sound like OCD. I have OCD and do little weird things...like having to cross the street in a certain amount of time or i'm never gonna be happy again for the rest of my life. weird...huh? I also count syllables when people talk. Its exhausting. I wouldnt be afraid to speak to your therapist about it though...its a very common condition that responds well to medication and behavorial therapy.
welcome and good luck
lorieann