Babies first colds are always scary for any new mum's. I still hate it when my 10 month old gets sick. Blocked noses are very common and if it is bothering your bub, you can buy a natural saline product called FESS in all chemists. It is a saline spray/drops which you squirt into the nose and then shortly after, you use the aspirator (provided in the box) and suck out any loose snot (sorry, sounds gross). Because it is saline, you can use it as much as you like as it is gentle on little noses. We have gone through one box and I have my next one in the cupboard with winter on it's way. Good luck and remember, colds don't last forever. :-)