Hi and welcome,
Unfortunately with Health Anxiety it's very difficult to not be anxious about your health once it's triggered, but the more you worry about your health the more your mind hyper focuses your thoughts towards thinking something is seriously wrong and like a self fulfilling prophecy, your physical body will reflect your escalating anxiety...
The more you read, talk and undergo testing for the medical condition your afraid of having, the more you escalate your anxious thoughts because instead of distracting, challenging and redirecting your anxious thoughts, the cognitive-behavioural aspects of what you're doing means your actually feeding your health anxiety and providing your anxiety with vaguely similar symptoms to the condition symptoms you've been reading about, and providing your health anxiety something to imply more meaning too....
What you are describing would be more suggestive-consistent with Benign paroxysmal positional vertigo (BPPV), which is the most common cause of vertigo and it's a condition characterised by episodes of sudden 'very brief' vertigo when the head is moved and it's rarely serious, common triggers include rolling over in bed, getting out of bed, and lifting the head to look up.
BPPV is thought to be caused by little calcium carbonate crystals (otoconia) within the canals being out of place, it typically will resolve on its own, it is associated with migraine headaches though but BPPV is usually a very easily treated disorder if treatment is necessary!
Everything else 'could be' related to your anxiety level, hyper awareness of your body as you mentioned, and your anxiety is likely effecting your sleep schedule already but it's not uncommon even when your sleeping for anxiety to be effecting sleep quality, sleep deprivation and or poor sleep quality over time will cause havoc during your waking hours....also keep in mind that anxiety can actually also cause you to be breathing too rapidly or more shallowly than normal and the lower oxygen rate creates temporary tingling, numbness and twitching around the mouth, lips and nose areas of the face.
Speak to your GP about experiencing vertigo getting out of bed, and because your health anxiety has been triggered waking every day with vertigo, it would be in your best interest to also seek additional psychological support and guidance from your psychiatrist or psychologist and potentially keep your health anxiety from getting out of control and making everything worse!
I hope that helps........JJ