I think it's worth speaking to a doctor about - it sounds like you may not have a temperature - but you are having, what could be described as, a hot flash - and those can be caused by different reasons and last for different amounts of time. I've experienced this temporarily many times - for an hour or so at the time - but, I think it's worth getting looked into ... maybe posting in the "ask a doctor" section could yield some more reliable information?
Did u do any blood test ....as it will Give u a clear idea whether its a viral or a bacterial infection......get your self checked