@Carlton
1. It sounds like you are describing a fairly common, minor side effect of vaccination.
2. Pandemrix ( I assume this is the vaccine you received) is, technically, a split virion, inactivated preparation. It does not contain live virus - rather, it contains elements of the virus particle that have been killed.
3. Vaccination is delivered via the Intramuscular route, and takes up to around 14 days to develop the full immune response. The protective effects should then be operative for up to a year.