I feel sick in the morning (Cold symptoms)?

Every morning for the past few days, I've been waking up feeling sick, with cold-like symptoms (Congestion, runny nose, slight nausea, headache, etc.) but it seems to fade away by the afternoon, although I don't feel completely up to par. And then, by the time night time comes around, I get a bit of a cough. Before you ask, I'm not pregnant. That's not even the symptoms of morning sickness :) Any idea what it is, or how I can make it go away?