I just received a new pressure (8) on my humidified CPAP, and I'm having a big problem the minute I get up: tickling to actual burning when the air hits my nasal membranes, runny nose, and constant sneezing. When my machine was set at 3, this happened a couple of times a month, - I blamed myself, thinking the CPAP hadn't been properly cleaned. But now I clean it in hot soapy water every day, and the problem is every single day! Do any of you have this problem?