Hi and welcome Mr Doggy
For me that lightheartedness was actually blood pressure problems - I'm not saying it's the same with you.... but the light headed feeling is probably something you should make an appointment about, just to be sure
There's no point in freaking out without anything concrete to freak out over.
If it is BP thats very easily managed, same with sugar, or electrolyte imbalances.
See a Dr and put your mind to rest.
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