You did not mention your age.
Half knowledge about body functioning is like having no knowledge at all,
It can create stress
which now you are facing.
If you want to clear your doubt, consult a physician first.
No self conclusion.
It can do more harm than good.
You are not your doctor.
There are people who are qualified.
Consult them and get to a conclusion and worry if you have to.
If your MRI
is clear and you have some problem other than that, your doctor should advice you.
This might be stress and anxiety.
Still not sure then check with your colleagues and consult a neurologist
But believe him because he is qualified, not you.