Stressing myself out 😔

Roxanne • 4 angel babies 👶 mumma to one little boy rainbow baby 🌈 rainbow baby #2 on board

I have taken clomid this month for the first time- I have had 3 back to back losses and the obgyn put me on baby aspirin as well as clomid. BUT, he also said I will ovulate between CD 12-18, and I am now day 16 with absolute negatives on every OPK I have taken since the last day of my period. Is there something wrong!? I ovulate on my own (we know this due to 3 pregnancies- I have never really tracked ovulation). Has this happened to anyone else? I’m so frustrated