OPK advice for anovulatory cycle

So it looks like I might be having an anovulatory cycle. I have had a few 40 day cycles though. Should I keep testing with OPKs until I get a period or stop and wait to start again after?

(Also I know FMU is not the most accurate- I have been testing 3x per day so I wouldn’t miss it, only took pics of the morning ones and any then afternoons if they looked any darker)

Any advice or anyone experience this before? Feeling stressed and worried 😔