Birth control

So I’m 16 and I have been having really bad period cramps, the last few months a lot worse than usual. So I asked my mum what I should do and she suggested birth control as I’m 16 and she said to me before my birthday that she would like me to be on birth control after I turn 16 (I have a boyfriend and I think my mum thinks that we will start becoming sexually active soon even though neither of us have any plans of that anytime soon because we feel we’re too young) so I was on the mini pill cerelle for a few months and I had a lot of issues with it eg: sickness, headaches, irregular bleeding was a big one as it didn’t stop until I came off it, and I was getting a lot of pain in my stomach and chest. I came off it for a month because it got too much for me, I’m now back on it and wanted to try again and I have been back on it for a few weeks and the symptoms have started again. Any advice on what form of birth control might be better? Thank you for reading ❤️