Hello. I've been getting very bad headaches for about six months. Mostly on my right side temple and back of skull. The pressure is so bad at times and I get very sleepy, blurred vision, feeling as though I want to throw up and in the last few months I keep smelling smoke. The smell is very strong. I also have shortness of breath. What could be going on? I would say they are the worst pan( headache) that I've ever felt.