PCOS, AF & possible cyst playing me up?

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Hi girls I’ll try keep this short. I’m 24 diagnosed with PCOS at 16. My periods have been regular (27/28 days) for two years UNTIL August 2018

It was 32, 35, 38 then last cycle was 50 days and this one is 37.

Today I come on my period. I’ve had sharp pains and cramps on my left side. Is this a cyst that’s messing with my cycle and causing one sided pain? If anyone else has had the same what was the outcome?

I will book a Dr appointment Monday hopefully have a scan to see what going on in there 🙄🧐