I have had a severe cold for more than three weeks. Today I was blowing my nose, and my left ear popped (yesterday it was my right ear). I got extremely dizzy, and couldn t even stand up. Eventually the dizziness went away, but it my ear still has a lot of pressure in it. Also, if my snot is green, and in-between my eyebrows is really sensitive, is it possible that I could have a sinus infection since it hasn t cleared up in over three weeks? Should I go in to a clinic tomorrow?