Ovulation help

Hey everyone, I am currently baffled. Going thru IVF and took a break for holidays. I decided to try naturally to see if I could jack pot. I have been using a digital test since CD14. I had a high since day, today is the 6th day- no peak. This is normally for me, as I only have max 3-4 days of high. Not sure what to think here. I have read of how sometime that happens and so no ovulation. My partner in crime is about to travel tmr and I am worried I will miss my window. Any one else experienced this before?