Ava was bouncing on her bouncy ball today and said her site hurt. I changed it out and sure enough it was red. It's not hot and she doesn't have a fever (though we just got over a fever) BUT it is redder than any site I've seen before. She was bouncing around like a jumping bean on it, so the redness could be from that. I sprayed it with Bactine and covered it in neosporin. How do I know when to worry?