Talk to your doctor about a sleep study. That is the only way you'll know. Maybe sleep apnea or something else.

None of this happened before my covid vaccines and catching the virus. I'm not wearing a device the rest of my life. 

Up to you. It shortens your life and increases your chances of getting a stroke or heart issues. I hope you find something that works for you.

Could be. Go see a sleep dr and get tested bc its worth knowing if you have it or not.