Can't work out my bbt chart... help anyone?

Natasha

I have pcos so all can be a little skewed. I had positive LH surge just before ovulation marked on chart BUT 21 day prog proved negative for ovulation. I've done hpt and got bfn. however the last few days temp is rising and I had ewcm BUT negative on the opks. Also during "fertile" period was testing High fertility on clearblue advanced ovulation tests and got positive OPK...

Any insight much appreciated!