I had those after I stopped my birth control. I started exercise and focused on my eating. It helped for a bit and got it back.

I am currently experiencing this. I’m only 18 though. After I got off birth control, My cycle was 20 days one month then 40 days. I am now on a 42 day cycle, took two pregnancy tests, both negative. I have fatigue and horrible hot flashes. I think stress and bowel issues are making my periods not come, I don’t go to the doctor for another month or so.