Clomid first cycle

Donna
This is my first cycle doing clomid 50mg. I am on cycle day 17. I normally ovulate by cycle day 15, the latest 8 have had was by 12 on cycle day 17, I also have pcos. My question is, what do I do? Do I call my obgyn or just wait till it comes? How long do I wait? Any advise thank you.