Is it possible to have had a "mini-stroke" and not be aware of the incident?

yes, though its common in older people you need to see a doc asap and you do have signs of stroke, my dad had a stroke at 42 so it can happen when you are younger. Your safest bet is to get checked. Also what the previous poster said regarding the sides of the body , this is not true strokes can effect both the left and right sides it all matters on where exactly you had the stroke. Also MMJ has just as many side effects not to mention it is extremely hard to obtain and you have to find a physician that holds a license to prescribe it.