No af for February at all🤔🤔

Soooo GM ladies just wondered should I be concerned! I didn't have af for the whole month of February. When it did come it was a week late and lasted 8 days vs my normal 5. Hubby n I bd after af and as soon as we were done I felt like I was bout to die! I was cramping so bad I had to take Meds n go to sleep for the pain to stop! Then the following morning my back hurt so bad and now been constipated for like 5 days fml!  Idk what to think ladies! Has anyone had this happen n what was the reason? Why wouldn't body skip a whole month?Â