Is it worth testing??

Av

So I could either be a week late or 3-4 days from af I know BIG DIFFERENCE, but I have PCOS so its a hit or miss. But anyways I say I could be late or not late yet is I usually have some what regular cycles usually a 35 day cycle but looking back at my last cycle it was 46 days. Would it be worth it to test if af don't show up?