Anyone experience with Clomid?

We have been TTC for 18 mo now. A year ago dr said I have PCOS and put me on metformin. This month we tried Clomid. I took it CD 3-7 and went in for a sono day 14 and he said my ovaries looked ok still and to get busy. Well CD 17 I finally had a positive opk but also my ovaries started to hurt. Now is the 3rd day of pain and it's pretty consistent, worse when I'm walking and made intercourse almost impossible the pain was so bad. 
My question is, I know some discomfort/pain is normal while ovulating, but with the duration and continued intensity is this something I would be concerned about?