I am having a lot similar symptoms. Removed Mirena. Within a week, soar throut. Then the joint pain started. Red "hot spots". And swelling of feet and ankles. Terrible pain that i can barely walk. Drs are testing for Lyme disease. Negative tests for lupus and rheumatoid issues. Many more tests coming.
Please let me know if there is a diagnosis. Feels like it's killing me daily. Inside and out. Everyday symptoms are getting worse.