I m having continuous nausea, watery stools, diarrhea after eating and persistent fever of 99-99.5. This has been for two weeks. I m also recovering from knee replacement done 4 weeks ago. I quit prescription pain meds a day before this all began. I spoke to surgeons nurse about symptoms and she said it doesn t sound as if wound is infected, my physical therapist says wound appears healthy. To confound just a bit more, approx 2 weeks ago I started taking a new version of existing med, Azilect. I was diagnosed with Parkinson s 5 years ago.