R, ur def not the only one. U stick urself long enough ur gonna have a lot of things not go perfectly. ESP year in and year out. Pain of all kinds, burning, sharp, dull and radiating u name it. Some will last a few minutes some will last a week. U can't see what ur stickin under there. Nerves are everywhere vessels too. Ur gonna hit arteries and shoot blood all over the wall or ceiling. Ur gonna experience all kinds of stuff over the years. Expect it and don't let it surprise u when it happens. Move past it and keep on training.