Is it bad if i wake up 4-5 times per night if i can then fall back asleep? if it's not apnea, what are likely disorders, or could this be ok?

Waking up?: Waking up 4x a night might be a sleep disorder. Are you tired next day? Are you gaining weight or losing weight? Do you fall asleep during the day? Are you successful on your job or are yoi dragging? If it is due to a sleep disorder, you can be tested and correctly diagnosed and treated. You can find sleep specialists in San Francisco.

Insomnia: Some possibilities include insomnia, parasomnia and restless leg syndrome. Insomnia can be related to unhealthy sleep habits and/or anxiety. If you would like professional help for rule outs, check out your local sleep center. http://www.ucsfhealth.org/clinics/sleep_disorders_center/

Bad? Maybe. Check!: Waking up 4-5 times a night (if not to urinate) can be sleep apnea, a lesser form of that, restless legs, an unusual sleep pattern, disturbances outside your bed, bed partners' talk or movement, pets, allergies, stress, anxiety, and a whole host of things that could come from any part of your body. See a sleep professional for a sleep study to check it out. Good luck!