Which day did I ovulate? OPK tracking

[natscatz]

hi everyone, it’s my first time tracking my ovulation and I’m a bit confused. It seems like my readings keep going up and down. I had an almost positive/positive on cd13 and then nothing for four days, and now on cd17 I have another very dark test. My last cycle was 28 days-averaging 27-29. I’m worried that if I have yet to ovulate that my luteal phase is way too short to get pregnant. Looking at my tests, when do you think it’s most likely I’ve ovulated? Any help would be amazing.

17 looks promising! I found these very confusing though! The app premom is good as it gives them a score and says when peak is

Another vote for the premom app, the readings are helpful. And best to keep having sex every 1-2 days until close to when your period is due.

Update: got a very strong positive cd18 at midday so looks like I was very much yet to ovulate!!