Rather than spend $900 to several thousand on a sleep study, get a wrist or finger-clamp oximeter that measures the level of O2 in your blood - there are $150 o

Rather than spend $900 to several thousand on a sleep study, get a wrist or finger-clamp oximeter that measures the level of O2 in your blood - there are $150 ones that can log data for 24 hours and connect over USB. Sleep a couple nights with it on, and if your O2 level drops under ~92% for any amount of time, you probably have sleep apnea or a similar disorder.