You may notice that your cold has simply gone from bad to worse. Now, you aren’t just sniffling, but your nose is completely stuffed up. You have no method of inhaling through your nose, and you may be noticing that your particular ears are closing up. With all of the junk in your breathing, you're wondering if there is something more to your signs than just being an usual cold. There’s a potential that you might end up having a sinus infection.