BFA, is there any chance you could be pregnant? Also, have you by any chance ever been diagnosed with a heart murmur, leaky heart valve, or arrhythmia? You may simply be having attacks of what's called orthostatic hypotension, which is low blood pressure when you stand up. Pot and a numbef of other meds can contribute to that. The fact that you're pale and that your lips get cyanotic (that bluish purple color) makes me think it's circulatory. And, like P4B said, you also need to get your blood sugar tested. Especially if you're also thirsty and having more frequent need to urinate.

Time for a good thorough physical! And tell the doc the truth about what you've been smoking and any other unprescribed pharmaceuticals you've been taking. Good luck!