I was just diagnosed with mild sleep apnea and "maybe" I will be using a CPAP machine, sand I say maybe because I haven't heard the results of the study with the mask yet but the technician that night said that I oxygenated well, on the other hand I felt horrible. Also, how accurate are the sleep studies since you don't sleep the same there than you do it at home, I was nervous etc. The night I had the sleep study with the mask I woke up with a horrible headache, do this happens to anyone else? Using a CPAP has helped your sleep problems??? I would like to hear from anyone who has gone through this.