Agnes, hun you are doing a wonderful job of being a mummy. Being in childcare is necessary for the wellbeing of the whole family and there are benefits for him too.

You are doing the right thing taking him back to the dr, keep taking him back as long as you need to, and if you think he needs to be seen urgently tell the receptionist why and they might be able to get him in sooner. If he has the runs perhaps he is not tolerating the ABs very well and needs a different sort. ABs are very necessary in some instances and this is one of them so don't feel bad about it.

Re the temp, P's tip of a warm-tepid bath is a good one, also plenty of drinks to keep him hydrated. Have you tried some infant nurofen instead of/along with the panadol - that might help with his sore ear too.