I understand your concern regarding your inability to stay warm
and chills. Aside from exposure to a cold environment,
viral and bacterial infections such as bacterial gastroenteritis, infectious mononucleosis, pneumonia, strep throat and urinary tract infections such as pyelonephritis may be the underlying cause. If it persists, it is best that you have this evaluated further for proper diagnosis. You may benefit from a referral to an infectious disease specialist also.