IUD problems

Ok ladies I'm seriously thinking about getting this thing taken out. I had the Mirena after giving birth to my son. And it was the best experience ever. But now after giving birth to my daughter, it's been hell having it in. First off, I've been bleeding for 25 days now since I've gotten it. That was the only thing bothering me until recently. Now I'm having constant headaches, I'm dizzy, tired as hell, nauseous and throwing up. I did take a test and it was negative so this is just annoying asf. I also noticed my milk supply has dropped. Sex has been great for me although my boyfriend is fed up with feeling the strings every time. It's starting to interfere. Last night i started feeling major pelvic and vaginal pain after strings went inside my boyfriend's urethra! Such a turn off... Have any of you experienced this and does it get any better???? I feel like crap and i used to love the iud 😞 i have an appointment December 17th since the nurse that I talked to refused to reschedule sooner since she said it's all normal 🤷🤔...