Mirena IUD and nausea or vomiting

Just got this inserted early November. It's December and Im experiencing a month of bleeding, cramps, irritability, nausea, headaches, dizziness, feeling unwell everyday.

Side effects: cystic acne & overall acne, metallic vaginal discharge, low libido & irritability. It was difficult to tell if IUD was in place since the doctor cut the strings too short. Went into OB & Planned Parenthood, they couldn't find it and were unsure if it fell out. This didn't give me a great deal of security as a BC since I couldn't tell if it was there or not...

I first got my Mirena IUD when I was 13-14 for hormonal-induced migraines. The insertion was very painful, but the cramping did not last too long after insertion. I had mild spotting for a few months, then my period stopped completely for 5 years. Last year, my period came back and has been irregular since. Overall, my period has been much lighter and my PMS symptoms and menstruation symptoms have been minimal. I also have noticed more stability in my mood and have had decreased migraines since starting my IUD.