I was on the pill for just over a year and a half. This regulated my periods. I came off for mental health reasons, and didn't get my first period for around 7 months. I read that this was normal, so assumed nothing was up. It has been 4 months since that period, which was my last. I have really bad back pains (mid to lower back). I get cramps (as if my period is about to start- usually confined to the left side) weekly! They have flared up in the last week to daily, with the back pain. I have taken a pregnancy test, around a month ago, and it came back negative. Any light that could be shed on what is going on in there would be great! Thanks in advance!