Drs always tell me that if they are feeding well, no temp, sleeping and behaving generally normally they are usually fine. However if your mummy instincts say something is wrong, then go to the dr or hospital and don't leave til they investigate.

My little guy sounds like yours runny nose, mucosy cough but generally ok. I'm not stressing cause he's my third and I've had experience with croup and ear infections, but as soon as I'm worried I bug my gp