Late ovulation with clomid?

Kristin • Been married 8 yrs, actively TTC for 6 yrs. I have PCOS & insulin resistance and never ovulate. My cycles are 100+ days. We just finished our fourth round of clomid.

Has anybody with irregular periods ever ovulated with late with clomid?

This is my first round of 50 mg clomid cd3-7. My period ended on CD13 (which is crazy rare for me, normally 100 day periods) so I feel like it must have done something. But at that point, cd13, can you still ovulate late? I've never ovulated that I know of, so not sure if this month is a wash or not. Thanks!