Dud OPKs?

Chloe

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​So clearly I bought some dud opks as despite testing 2-3 times a day i haven’t had a +, but have had a temp rise. Do you think i ovulated on CD14 or 15?