Why do annual flu jabs make you feel rotten?

I had a seasonal flu (influenza) and a pneumoccal vaccination yesterday. Today I ache all over and have no energy. I know it's related to the injection because in the past I've had the same symptoms (stopped having them but now thought I'd better). I know that the vaccination is not live and I am not... show more I had a seasonal flu (influenza) and a pneumoccal vaccination yesterday. Today I ache all over and have no energy. I know it's related to the injection because in the past I've had the same symptoms (stopped having them but now thought I'd better). I know that the vaccination is not live and I am not allergic to eggs (used to culture the vaccination). But the medical people always say the vaccination cannot make you feel like this afterwards. Anyone got any ideas please? I'm in the UK.
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