Please have a look at the questionnaire page if you have a spare minute.
Could you see if 'feminax' is still available, this was the only product that stopped period pains for me when I was 13/14. Then it was withdrawn without warning but returned to the market a couple of years later [1970s]. Speak with a Pharmacist too, they have private rooms.I had 'the runs' 10 mins. B4 a bleed began even if a period wasn't due
I use to suffer from very painful periods each month, I was prescribed Ponstan, which did work, I wasn't sure if they were still available so googled and they are. https://www.netdoctor.co.uk/medicines/aches-pains/a7366/ponstan-mefenamic-acid/ It acts on prostaglandins in the uterus and calms the cramping and inflammation.