Ovulation testing

Eileen

On what day of your cycle should you start taking ovulation tests? My last cycle I tested on day 13 and got 3 low days before my high… but then I just kept getting high days with no peak. I had one day where I didn’t test but the next day said high. I stopped testing after 5 days of high. Could I have missed my peak day or is it possible it didn’t happen?