Snoring is one of the most common symptoms of sleep apnea, although not everyone who snores has sleep apnea. The snoring is typically loud enough to be heard through a closed door, or causes a bed partner to elbow the snorer.
Daytime drowsiness, including falling asleep unintentionally when working, reading, watching TV, or behind the wheel when driving is another common sign of sleep apnea.
A bed partner may tell you that you stop breathing at night, with the pause that may or may not be followed by a choking or gasping breath. 
- Morning headaches
- Memory or concentration problems
- Waking up frequently to urinate
- Dry mouth when you wake up