This has only happened to me a few times, but the first symptom is a 7/10 headache, then about 2 or so hours later my vision goes spotty and i when i try to read something i completely miss the first few letters (all seemingly correlating with my left half of my body) its always on the furthest outreach of my sight overlap and on the left side, the right is fine, then about 20-30 minutes after that usually my left hand goes numb, sometimes up to halfway up the forearm, but today my left foot went numb, I get fatigued and exhausted and can barely walk without running into people or efficiently use any other motor skill as well as i could right before the headache is at the back of my skull right above where my brainstem joins brain, not sure if that matters, but its also slightly to the right, any ideas of what could be wrong would be greatly appreciated. thanks