An apnea means that you stop breathing for 10 seconds or longer and then wake up. If you stop breathing and wake up between 1-9 seconds, then it's not counted. So you can stop breathing 25 times every hour but if each episode lasts less than ten seconds, then you're told you don't have any sleep apnea. But you still have a major sleep-breathing problem. Treatment is the same as if you had sleep apnea. First of all, take care of your nose definitively. If medicine doesn't work, talk to your ENT about nasal procedures, depending on what's causing your nasal obstruction. Hopefully, this will be enough, but if not, then you can consider other sleep apnea treatment options.