I Have Extreme Pain In My Right Thigh Since Sunday

I have extreme pain in my right thigh since sunday and both the ER and an orthopedist don't have an answer i had an ultrasound to outrun clot and X-rays and now wait for apt to get MRI I started getting very bad chills last night, told the orthopedist and she said its unrelated i have them again tonite and will check for fever as i feel like I have one. I read about Lymes disease and spent overnight sunday at Montauk the pain began after dinner that night It is mainly in my outer thighs and travels to groin and occasionally slightly down my knee The chills have me scared I have no marks on my body and didn't fall or stain myself at all prior to these symptoms