I can totally relate to drastic pain/body changes on the pill! When I was in college and on Lo Loestrin, my boobs were huge and constantly hurting. It was a constant battle between wanting to be safe while pushing through daily physical pain. The second I stopped taking the pill I dropped several cup sizes and my chest (and back!) pain went away. I decided to get the IUD as well in 2018 and have no complaints about it so far. I’m not sure which pill you were on but I think that it definitely played a big role into the physical pains we were experiencing.