My daughter is 12 years old and for the past 3 months during her period she has been running fever. This month it was extremely high. She also complained of headaches, vomiting and fatigue each month. the following test have been run: CBC, Flu and ABD US and all have been fine. As I am typing this she is having a West Nile test drawn. Have you ever heard of all these things being associated with monthly periods?