My daughter had an insect bite on her foot. She went to the school nurse who thought it was a spider bite. I took her to the pediatrician who put her on an antibiotic (Bactrim). After taking the antibiotic, she began having stomach cramps and diarrhea. She also had muscle aches and a horrible headache. The bite area has healed a little bit, but she has 2 small white bumps near it. She woke up this morning with one eye swollen almost completely shut. I took her to a walk in clinic (about 6 hours ago), and the doctor said she had a staph infection. They gave her a shot of Rocefrin. she is still having severe stomach cramps, and her eye is still swollen. She also has a little bit of swelling just above her eye. Could this actually be MRSA?