Wondered if anyone else has been through this stage 
DS is 3 and started nursery in September. He has previously attended a childminder but obviously a smaller group.
Since then he has been ill constantly. Once vomiting and another with a heavy cold but he gets recurrent episodes of high temperature which knock him for days, no other symptoms other than a mild cough.
Before anyone says, I’ve been to the doctors twice in the past 6 weeks and every time she says probably viral and to let him get on with it.
Is this something that typically happens when children start nursery or should I be pushing for more? I know I should trust the doctor but I’m worried that it’s always the same thing just on repeat?