Hi my son is 9 months old and has been teething all week. Red cheeks, bad bum, off his food but taking his bottles fine, slightly irritable but still sleeping through the night, no temperature, having wet nappies. I was hoping he was coming out the other end but I noticed this morning that he has a rash on his back and tummy. I'm probably going to take him to the doctors tomorrow but could this be to do with his teething?