anyone else feel tired, nauseous, lightheaded, etc. when waking up? especially when waking up 2-3 hours later than usual?

I'm not sure if this is anxiety related - I'm not sure whether I even really struggle with anxiety, to be honest.

I usually wake up around 7:45. recently, I've been sleeping in, so waking up around 9:30-11. whenever I wake up at this time, I wake up very lightheaded. not dizzy as such, but as though I am sick with a cold or something. it doesn't go away after eating or drinking coffee, only after a few hours, but no consistent time.

I suspect this is as a result of anxiety as I have been experiencing various other somatic symptoms recently - twitches, shortness of breath, shaking - without any actual worry. if anyone has had similar issues or has got any advice, let me know.