Environment might be a factor - if the air is too dry, that can disrupt your breathing - as can sleep apnea, but you'd have a history of that and this sounds like a new thing. Some discomfort is disrupting your sleep pattern, half-waking you. Noise, maybe?
Eventually, of course, you'll sleep regardless but at an inconvenient time - like driving…
You may find valerian or melatonin helpful - available over the counter.
Re: Sleep
Environment might be a factor - if the air is too dry, that can disrupt your breathing - as can sleep apnea, but you'd have a history of that and this sounds like a new thing. Some discomfort is disrupting your sleep pattern, half-waking you. Noise, maybe?
Eventually, of course, you'll sleep regardless but at an inconvenient time - like driving…
You may find valerian or melatonin helpful - available over the counter.