The pill

I’m quite young and I’ve been having some extremely heavy periods and the cramps I’ve been getting are horrendous. It’s been effecting my concentration at school and everything. Im not sure if I should go on the pill or not. I’m 16 and I was wondering what happens when you go on the pill. I’m a bit worried about the hormone changes as I have anxiety and suffer from depression quite often. What kind of symptoms did you have when you first went on the pill? I’ve got a doctors appointment for talking about my options and I’m hoping I can go on the pill.