I had my period (or withdrawal bleed, Im on the pill) last week. It just ended sunday when I started the new pack. Starting Monday morning I have had terrible back pain, cramping and headaches all week. I am almost in tears, it's really annoying and I don't understand why I am having such menstrual type pains after my period is over. Can anyone give me any insight? I have searched online, but most people write about pain mid cycle or pre-period. This pain started literally right after my period ended. My period was more tolerable than this.

Please give me any ideas.