I took DD for her first set of jabs yesterday and thought nothing of it as DS was fine with his, but last night she projectile vomited all over me and started running a fever. I gave her Calpol as directed which brought it down initially but then it came back and went higher. I gave her a second dose of calpol but can't give her anymore due to her age. Her temp went down again but she continued to throw up the little that she ate and has been pretty gloomy. Temp was okay first thing this morning but has started going up again. Is this normal?