Quoting nicki4455:" right now hes only in a onesy and sox and thats all he has on but his head feels more warm then it normally does."
Some say you add a degree if you take it under there arm, but then sometimes they will tell you not to add anything. But, I do know rectal temp is the most accurate. I have always took DD's temp that way. If you want to be sure just put a little vaseline on the thermometer and take it rectally. Just put the tip of the thermometer in there, you don't have to stick it far at all and it won't hurt them. If you don't want to try that, just call the pedi and tell them what the temp was when you took it under his arm and tell them that he feels warm and see what they think you should do.