So I noticed last night that my DD has a small rash on her belly. It was a pretty small area of little red bumps. I have been keeping an eye on it and it looked the same this morning but tonight when I went to put her in her pj's it was worse. Some of the bumps have gotten a little bigger and it looks like it has spread some, though it is still a pretty small area (no bigger than a credit card). I think I am going to be taking her to the pedi in the morning but was trying to figure out what could be the cause. I haven't changed anything. We use the same detergent, bodywash, formula, diapers, wipes, and haven't started solids yet so that can't be it. Is there something that I am not considering? Does anyone have any advice on what could be causing this?