Hello, I have noticed that every afternoon around 4 pm I start to get really cold. No amount of blankets or sweaters can help. The room temp will be 22 C and I m freezing. I have normal thyroid levels after having half of my thyroid removed in 2002. I had back surgery in 2011 and due to an unsuccessful surgery I am currently taking Gabapentin, Athrotec, Cympbalta, Oxyneo and Tecta. I take a dose of Gabapentin 300 mg, Oxy 20 mg and Arthrotec at 3:30 pm. Can you think of any reason why this happens. It almost feels like I m feverish but when I take my temperature, it reads normal.