Question about positive opks

Kat

For the last 4 months I have had a postive opk on cycle day 12. I think I had one cycle when it was day 13 I had a positive opk.

I am on day 13 this month and have not had a positive opk.

Would you expect to have a postive opk on the same day every month?

I do have pcos but my cycles average around 33 days.