Anna I rushed Emily up to the hospital last week as she was wheezing and a had a slight tinge of blue around the mouth. Fortunately by the time we arrived at hospital she'd improved and her airways were 100%, but that sort of thing I would go straight to the hospital for. I'm an asthmatic, have been my entire life, so I know what it's like. I'm not saying it's asthma, but when it comes to respitory conditions, they need to be attended to straight away.
I hope he's improved by now, or improves in the next couple of days.