Are you actually charting your temps? do you have a chart you can link? maybe you O'd later than you think you did if you are not temping.
To be honest, charting my temp seemed daunting - I only visited fertilityfriend.com 11 days into my cycle, so that's only when I really understood how it worked.
Still learning. Early days. would really appreciate some advice.
Charting is super easy.
Get a BBT that reads to .01. make sure you wake up the same time (within reason 30 mins either way) every day and as soon as your alarm goes off take your temp. On weekends I temp and go back to sleep. enter temps and other signs you have into fertility friend and it does the rest!
FF has lots of "classes" etc on their website, I have read a few and they are helpful. Charting has helped me figure out my cycle I don't O until CD20 most months and would have probably not figured that out without temping!
ETA if you actually did O on the 10th I think that is what the original message said, you would only be 6 days past ovulation and that is way to early to test. wait a few more days and test again! (once a week until AF shows or you get a positive)