Is it possible that I ovulate late even with Femara?

Hello
So my question is: Is it possible that I have a late ovulation even if I take femara?
After Femara, I got positive OPK on CD 13 and CD 14. CD 15 is negative. Is it possible that I ovulate later in this month? or being positive with femara is a real one!

Yes, it is totally possible to ovulate late even with Femara. It is also possible that was a false positive with the OPK, or a real one!! I would be having sex every 72 hours after your attempt to be sure you're in with a viable attempt even if your ovulation is delayed.