coughing sneezing and wheezing

we've had 4 lovely weeks getting to know Ben and trying to get the hang of this parenthood thing. Still not quite sussed it out and have realised that this will be the case from now on as theres no right answers.
Ben has caught the cold that I had earlier in the week - as has Paul. It's worrying being the parent of a 4 week old as it is, without the additional worry of them having a cold. He's snuffling and sneezing his way through the day, when he's not zonked out sleeping. It's partly nice cos we get to sit with him all day in front of the TV so we can watch him like a hawk but its also shattering as I am so worried at night time. Hopefully he'll get over it quickly and be back to his normal cheery self.