My cycles are really irregular too, so far I've had 29 days, then 76 days then 46 days and now I'm getting ewcm so hopefully back to 29! It really doesn't help when trying to predict ovulation!!!
Have you seen a fertility specialist?
I've had an internal scan and they said everything looked normal.
I was charting but it put too much pressure on so now I just chart after a positive opk to confirm ov as I've had pos opks and then no ovulation before now. I use ic opks too and monitor cm, how about you? X