Sore boobs and acne...whyyy

I’ve had Mirena IUD for about a year now. The past week or so my boobs have been soooo sore. It started with the entire boob but now seems like just the nipple, still super sore though. I’ve also been breaking out which doesn’t happen to me often. I don’t have periods with the iud, so I obviously can’t tell if I’ve missed one. Has anyone with the iud had similar symptoms? I’m planning on going to the OB soon, I just wanted to reach out while I wait for an appointment.