No Ovulation This Month??

L

Is it possible to have an incredibly regular cycle and ovulate (or at least get a very positive ooo between cd14 and cd16) every single month and then randomly not ovulate one day? I have only had completely negative opks, now on cd18. Like not even one strip that’s remotely close to positive. I’ve been testing several times a day now since cd14 and nothing. Wtf!! Is it possible to skip a month of ovulation?