Progestogen-only / Mini pill and lower back pain

I had always suffered with very minor anxiety, however once I went on this pill I was a wreck. It was like I became a whole different person, I was irritable, mean, and I was constantly upset. In the space of a month I went from a D to and E, and I gained weight like I never have before around my lower stomach. I had always been rather skinny around there, but even after 2 years of not taking it, I have never been able to return to how my body was beforehand. The first 2 and a half weeks were normal, but after that I bled consecutively for 9 weeks, with a few 16 days staggered in between where I only briefly spotted.

The first 2 years on this pill was fine, my moods were neutral and my periods stopped completely. However, this is my 3rd year using it and I’ve started growing darker facial hair on my chin and I’ve become more irritable with occasional breakthrough bleeding. Not sure if my body has just changed hormonally as I’ve grown older and doesn’t agree with Desorex anymore. My pharmacist recommended swapping to Noriday, so shall see how that goes and whether it improves my symptoms despite containing a higher amount of androgen than Desorex.

Would have been ok apart from the bile acid diarrhoea anytime I ate anything with fat in it! Thought I was lactose intolerant, stopped pill and suddenly I could eat dairy again! Weird, went on it again after having my son and the diarrhoea suddenly came back doctors said it couldn’t be the pill but I’m not on it now and after 3 weeks no more diarrhoea. Bit of an odd coincidence if it’s not the pill