Why the cold?

With my past pregnancies I can remember at least one cold that I held onto and couldn't shake. Well I should have known better than to think this time would be any different. I picked up a head cold from somewhere and now I can't shake it. It could be worse true, but I am always congested anyways, add a cold and my nose is basically useless. Plus I have the nice sore throat to go with it. At least Corey sympathises because he also has the head cold. I am hoping that I can shake it soon, because I sleep even less when my nose is stuffed and my throat hurts.