I get stuff like that on occasion. Too much caffeine will do it, (like it I have a coke or something) and so will my asthma meds, stress of course. My doc says its a common perimenopausal symptoms, as are palpitations.
But if it continues with cutting out common causes, get it checked. Anemia is another possibility and there are many medical reasons, like thyroid problems, that other than a passing thing, should be seen by your doc.
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