I have been having a problem with low temperature. I had the flu a couple of months ago and my temp was around 100. After I got to feeling better, I was continuing to check my temperature and noticed it was in the 97s. I have always had a normal temperature of 98.6. I continued to take my temp off and on, and sometimes it was in the 96s and even down into the 95s. Most of the time now it is in the low 97s. I feel fine except that my hands are cold a lot, and when it is real low, like in the 95s or 96s, I feel kind of shaky, and I have kind of a headache. Is this something I should be concerned about, and what would cause this?