Please help

So I been a bit confused on what’s going on has anyone had this happen and still conceived I have pcos and took letrozole 5mg august 18th for five days I been tracking bbt as well on cd14 it said I was at my peak every since then my test been going up and down and now other apps are saying today is my ovulation day and marking my test from today as my peak I’m lost I have a dr app on Thursday I hope today is not my ovulation day due to my husband being out of town and we could’ve sworn august 29th was our chance to BD