It's most likely just anxiety I had the same and numbness of hands and feet for 3 days straight o was so scared but it was all
Just anxiety and the more you're afraid the more you feel and notice everything.
Also check your stomach and read about candida it can trigger anxiety, take natural anti fungal pill for it safe and no side affects it's only oregano oil and other natural things
Although there are blood tests for B12 deficiency (generally caused by absorption problems rather than lack of B12 in diet), there is a lot of variation in the way people respond to B12 - so much that just going on the figures from test results is not sufficient, so getting a diagnosis and proper treatment can be problematic.
Hearing the blood flow in your ears is not uncommon - its one of the most common forms of tinnitis.
You've mentioned tension which can cause aches pain in muscles etc. Also, tension restricts blood flow causing tingling and heat, too, when muscles relax and blood begins to flow. Not easy but try to accept these symptoms and let your body go. I've had major dizziness, over last week, chronic tension, mainly in shoulder and neck, causing it.
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