Hi, Just wondered if anyone has had anything similar or any advice. I decided to start using opk for the first time this month. I have irregular cycles ( last one 63 days). So started using them from day 10 & got a positive opk on day 18 for 2 days. I hav been charting my temp for 5 months but I didn't get a temp rise after 2 days of positive opk so I obviously didn't ovulate. 5 days later I got another pos opk & this has now lasted for 4 days but no temp rise yet. Has anyone else ever had anything similar?