Hi Iv e been waking up with minor headaches for the past two weeks or so, when I stay still for a little while I feel feverish symptoms with no fever, (body feels warm to touch and I feel cold) The other day I had upper stomach cramps (at least I think that s what it was) so bad I was doubled over and almost called 911 just before they started to go away, they were gone for about 5 min and came back again one more time ( I thought gas so I drank seltzer water and they never came back, but the other symptoms continue. I am 5 10, 163lbs in good shape but I m a little worried there may be something internally wrong with me