Hi, I am hearing impaired, 52 years old male. I had a bad night cold chilling for an hour and half. After that and had body heat the temp was 100.8. My heart pounced fast a little bit and head started swirling. I had to put cold wet towel around neck and forehead lying on my bed. I wonder if it could be connected with heart condition that I had an aorta valve replacement surgery last Oct 13 2009. I had happens 3 times this year.