Missed LH surge

I’ve had blinking smilies eight days now and I’ve been testing once daily...no LH surge yet and it’s past when I typically O. Has anyone else missed their surge before when testing once daily? I’m worried I didn’t actually ovulate and therefore won’t be able to get pregnant this month.

(Yes, I know BBT and CM are good ways to check but it’s too late for that now so I’m relying on the OPK).