My GP referred me to a psychiatrist for possible OCD...it's making my life hell.

I told my GP about how I cannot stop relaying thoughts and it's having a debilitating effect on me to the point where I have to be medicated for anxiety. I had to take a leave from work because it was so severe. I'm a nurse so you can imagine how it's impacting my mind at work.

My GP referred me to to a liaison psychiatrist but I don't know what to say! It's a consultant appointment so he won't necessarily be my long-term psychiatrist. I just don't know what to say.