DS has his 8 week vaccinations this afternoon and was fine after. However for the past two hours he has screamed at the top of his lungs, not crying but hysterical screaming. It sounds like he's losing his voice from how high pitched the scream is. He's thrown up the calpol. He's inconsolable. I'm on the verge of ringing 111, but is this normal? I didn't expect it to be this brutal.