Hi, Im pretty sure I either have a sinus infection or an upper respitory infection. Im waiting to contact a Dr. on Monday, because there are no open offices during the weekend. What can I do for temporary relief? I have used the nasal sprays which have helped, but have already used them for three days, and according to the box , prolonged use can make things worse. I have a lot of trouble sleeping at night, because I can't breathe through my nose, and am constantly waking up due to an extremely dry mouth.