What do you think about the swine flu jab? - pros and cons...?

I dont like the idea its only just come about and not really had a running in period to see what the side effects are etc also i dont like the risk that your body can actually contract it from the jab and not be strong enough to fight it off ! I heard about a school girl that actually ped away from a jab, so it must still be testing out, what are the facts on this? Thanks