IVIG and low body temp

Hmmm, first we had IVIG yesterday and EVERYTHING went smoothly! We had our favorite nurse, and our favorite child life specialist. Everything was awesome. They got the IV in on the first try, he had no reactions to the treatment. It was fabulous. The only issue yesterday was that he was COLD. The initial temp was 95.9 (35.5 celsius) He only warmed up to 96.1 the whole time we were there. They said to check his temp when we got home and then to call the doctor if it was still low. He was 96.2 when I got home, so I called the doctor. I spoke with a nurse who didn't seem too bright, I know that is mean but she just seemed completely clueless, she said she would let the doctor know and call back. That was yesterday afternoon, and I still haven't heard anything yet...