You can get unwell from shots, they tend to cause side effects, rarely, they cause serious side effects(for me, being ill since getting them, which is now running up to a year this december ://// may have CFS/M.E which has no CURE :// Yeah can tell I regret getting MMR and Tetanus&Diptheria & other one combined for a booster)

You should feel better soon I hope... if not, go back and see what's going on...
Your immune system tends to be run down from fighting the vaccine, that's the whole point, but it should be okay soon...x