Every Evening I Get Cold Even When I Am In

Every evening I get cold even when I am in side and it is 74 inside of my home. I do have a problem with high white blood count but there is no sign of infection at all. The problem with my blood count has been going on for a year now. But now this has started me getting cold every evening and I have to get under a election blanket to get warm. I am 46 year old female