About 3-4 weeks ago, I came down with what I thought was just a common cold. But then it got worse - I had diarrhea, vomiting, and conjunctivitis. A few days later, I noticed my calf muscles had tightened, feeling almost as if in suspended cramp. A few days after that, I noticed I had joint pain in my knees. This quickly spread to the rest of my joints (I.e. ankles, toes, wrists, fingers) simultaneously. I was diagnosed with diabetes last year, & I was started on a birth control pill to regulate my cycle (I had been losng a lot of blood which resulted in anemia & iron deficiency. Because of this, I had to have a blood transfusion). Now, aside from a tickle in my throat, I only have joint pain. I've been taking 800MG of Ibuprofen which seems to help tremendously, but what could be causing this inflammation in my joints?