Frustrating Ovulation

Rae • 21, TTC for baby #1, suffering PCOS, waiting for metformin/Clomid
So my cycles are completely and utterly irregular to the point where I'll have some every two months, and then might have to wait eight months for the next one.
I keep charting in the Glow Calendar everytime a cycle has changed to what was previously predicted, and have to constantly change the amount of days between cycles, and it's driving me nuts. What WAS my fertile week, starting on Christmas Day, has now changed to two weeks ago, as AF showed up today.
Does anybody else suffer this bad with irregularities? I'm still waiting to be prescribed Metformin/Clomid by my GP.