Womack, sounds like we had similar experiences. I was on my "project" boy a couple of years ago, actually had just mounted, and leaned over to put my right foot in the stirrup and unbeknownst to me, there was a giant cockle burr in his arm pit area right under the cinch. It was caught in his winter fuzz. When I leaned over, it stretched that cinched over and put pressure on that sticker. He was still very sensitive to unknown things and spooookyyyyy and just popped. Went straight up, back rounded, and I went flying. I never hit anything except the ground. It was just such a sudden buck, it whipped my head way back and I was coocoo before I hit the ground. I had enough whits to know I never let the horse get in the last move and got right back on but I don't remember it. The kids got my husband when they noticed I was just sitting on the horse, asking what time is it over and over. I had somewhere to be that day and went into that ride knowing I had to watch my time. Apparently that stuck. LOL! Concussions are so weird. They had to tell me to get off the horse and took me to the ER. I had a CAT scan done (so they say). Don't remember ANYTHING. I was conscious and talked the whole afternoon, but I literally don't remember any of it and it's been 2 1/2 years. They asked me questions like who my kids are and what my horses' names were. Apparently I got mad at them for asking the same questions over and over because I never quite got all the names. I got them right, I would just forget one here and there. Course.....I have 6 kids. I forget names without concussions. ;) And apparently I was very proud of myself for getting back on because that was the other thing I remembered. "At least I got back on....at least I got back on....over and over" LOL! Anywaaaaay, long story short, I wear a helmet now. I was sooooo anti helmet, even after the accident, and I don't know if a helmet would have even helped with this whiplash case, but my then 7 year old daughter wanted a helmet after this happened and what kind of mama would I be to say no, mama doesn't wear helmets. We always wear them together now. Still not my favorite attire, but I've gotten used to it, and now I actually feel naked without it. Even in 105 degree weather!!!!! Bla. Oh, and I always check for stickers in the cinch area now too!