I have been having these sinus headaches lately. I can't sneeze. I feel a lot of pressure in my head. When I shake my head it feels like I have a headache. I have been taking alka-seltzer cold and sinus and advil cold and sinus. They both have been helping. I am need something to open up my sinus's to release the pressure. I have gas heat in my house and usually sleep with the window cracked and use a humidfier. Anyone else suffer from these? What can I do to help remedy these headaches? Thanks.