My cats nose is pale and dry

So he usually has a very pink nose and it's usually wet but it's dry and almost white right now, we also noticed that his eye boogers which are usually black and dry have been yellow and goopy. I'll be calling the vet tomorrow but I'm just wondering if anyone else has any advice or anything? I'm just wondering if he maybe caught something from a mouse that he's caught recently. 3rd pic is what he normally looks like. Thanks in advance!