I have been coughing real bad since last nite and now it hurts real bad when I cough it feels like somebody is sitting on my chest?

Emergency . Chest pressure and pain is a medical emergency. It may be that you just have a broken rib from coughing, but you may also have a serious infection, asthma, or a heart attack (myocardial infarction). Get thee to the hospital, and don't drive yourself. Preferably, call an ambulance, as they can assist you if you have trouble en route.