I have always had temporary loss of viaion when standing up quickly or stretching. Back pain has also been common for me since I starred riding horses a few years ago. My sister pops it a couple times a week and it helps, but last time I lost control of my bosy and just fell to the floor. At first it was funny because I didn't know what happened but after a few seconds, my vision was still messed up and I couldn't stand. I have been droppong things without explanation, not being able to speak a complete sentence without slurring. It might just be one of those things but I just want to make sure no one thinks it is anything serious.