I was on a tram for the first time today and all of a sudden my heart rate spiked (to around 120bpm from 60bpm). I also suddenly felt really hot.
My vision went weird (like someone had turned out the lights but there was still a candle there), and I felt really dizzy and couldn’t hear anything.
Does that mean I was experiencing pre-syncope?
Also, how do I get rid of the headache I have now after it.