hi the lower body tempature mainly due to cold weather however if some one living in the same house as you doesn t feel abnormally cold like you then it may be due to the following reasons 1. exertion. 2. less consumption of fluid 3. not consuming healthy diet 4. diabetes 5. anaemia 6.. liver failure 7.kidney failure 8.alcohol or drug abuse 9.side effects of medications 10Addison s disease 11.hypo thyroidism 12.stress 13.anemia so find out the exact cause stop self medication consult genearl physician for further evaluations. hope this answers your query. take care. wish you speedy recover.