My son (he is 5 and weighs about 49 lbs) woke up this morning with what looked like two bug bites. One on his chest, which was small is size, and has not changed. The other one was large (oval in shape 2 inches wide and 1 inch tall) and on his right hip bone, this one has seemed to get more swollen, hasn't really gotten bigger, but has "puffed" out more. He also had a fever of about 103.6. He complained of his right leg hurting. When he walks he seems like something hurts because he kind of limps, I don't know if it's just his leg, or maybe his joints aching? He also has a slight rash on his left forearm. Earlier this morning I gave him tylenol, and it brought his fever down. It came back this afternoon, and I gave him another dose. It's about an hour and a half later, and his fever doesn't seem to be coming down. Any advise appreciated. Thank you.