Needing opinions

Sierra

My boobs have been extremely sore for the last few days. Today me and my SO had sex and I immediately got back cramps that haven’t gone away (about 7hrs). I’m on mirena but took a pregnancy test anyway just to be safe. It was negative. We’ve had sex several other times so I’m not thinking today would already show up a test. Just curious if there could be any other reason for sore boobs and back cramps