Ovulation pain with clomid

I am on cd15 and I took clomid on cycle days 3-7. This ovulation pain is HORRIBLE!! At my last appointment (cd14), my largest follicle was at 15mm. I go back in in Tuesday (cd17). according to ovulation tests, i have not ovulated yet but it looks like its come soon (lines are getting darker). We are hoping to get a positive opk tomorrow because hubby is going out of town for work on Tuesday and won't be back until wednesday morning. They are saying if I get a positive opk in the morning, they can inseminate same day. fingers crossed!!