What is your latest worry or anxiety about?

I have been noticing in the last year or two that occasionally, maybe once a month or so, I feel like not enough air is getting in me as i awaken, only in the morning. Like I'm breathing harder to get full air..and it's only if I'm on my back. Im a stomach sleeper all night and it never occured then. Im wondering if I have mild sleep apnea.
Good news, Im not tired during the day or dry mouth, which are the two main symptoms. But, now I'm worried over those times I was breathing in harder. I guess over time it can lead to A fibrillation, where the heart flutters or beats a bit off sync. It said not everyone with apnea gets it but it's yet another health anxiety I'm thinking of. 😔