I'm so sorry to hear this you must be totally knackered. Has his hand calmed down? He may well be having an allergic reaction.
It was totally unacceptable to send you home without the new antibiotics being reconstituted what if you hadn't been able to get to a chemist to do this for you (angry)
When ds is better you should complain.
Hope your night isn't too dreadfull will post in the morning to see how you are.