Was prescribed doxy for possible Lyme's. Pulled tick off within 24 hours period, but for precautionary measures was given 100mg for 14 days (1x/day) . I am cold,but my face is red hot--feels like a sunburn. I work in an office, flourecent lighting, not sure if that has he same effect as the sun. Experieonce bad stomach cramping for 2 days, then started taking 30 min after food, and not in the AM. I take it about 4 PM. No nausea. Just the "sun-burned" face.