I have pcos and don't know if I'm late

I was diagnosed with pcos about 3 years ago I am now 22. Im on cycle day 37 and not sure if I'm pregnant or not. My boobs are so sore. But for the last week I've felt like my period is literally about to happen, I get the cramps and every time I go to the toilet I expect it to have started. I don't want to get my hopes up. My cycles average out between 28-32 days. But according to glow the longest cycle I've ever had is 41 days and that was over a year ago.. What do you guys think?