I really think something was WAY off with that monitor.... or you are getting systolic and diastolic confused.. Below
120/80 is considered "optimal". The top number (120) is the systolic. The bottom number (80) is the diastolic.
Some people have very low BP and are perfectly healthy....Readings as low as 90's/60's are not unheard of and nothing to be alarmed about unless they cause symptoms
I think you accidentally reversed your numbers
...You say your systolic was 67 and diastolic was 133 (67/133)..That's not humanly possible! You'd have to be a COW under Stage 3 anesthesia for a number like that and even then I don't think the cow would make it!
It was the other way round..133/67, which is nothing to worry about. The 133 systolic was a tad elevated but occasional systolic BP spikes are normal and to be expected, especially
if you are feeling dizzy, and probably a bit PANICKY. The 67 diastolic is textbook gorgeous.
ALSO, taking your pressure in a public, active, busy, noisy place is never a good idea! And supermarket and drug store monitors can be very unreliable if their batteries are running low.
Regarding your feelings of faintness, blackouts, and air-hunger, you are very young so it's unlikely to be anything really serious. When you stand up suddenly and get a "head rush" or things momentarily "recede", that could mean your blood pressure dropped suddenly but that's not necessarily dangerous or serious. (It's called orthostatic hypotension and is very very common and, I might add, benign!).
Your symptoms could be caused by ocassional low BP, a blood sugar problem, an inner ear disorder, fatigue, lousy diet, anxiety/stress, dehydration etc.. Rarely, they could be attributed to a heart issue, but given your age
, the latter is very unlikely indeed.
Still, I think it would be a good idea to get a check up to make absolutely sure you're A-OK,which is most likely the case. Do it if for no other reason than to allay your anxiety.