Because your symptoms won't sit still, I'd recommend you get along to your GP in order that some tests might be run to arrive at an explanation.
It may be as simple as a minor tissue injury or muscle strength imbalance resulting from years sitting at the same desk or driving at a slight angle which in turn may cause a minor circulatory issue.
There's only one way to find out. Please let us know what is said and we'll aim to make some useful suggestions as to remedies.
Best wishes
Earle
Do you have questions? Please feel free to ask.
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