I don't get mine every month I can go 4 months without it. But I would recommend going to your doctor to get put on birth control so it can regulate them
Could it be your thyroid?
Mine is irregular in the sense that I may have it two months in a row and then miss the third month. Could be hormonal or stress related. I'm not really sure. It's dang frustrating cuz I never really know when it's coming.