My guess is that at 5'9, you're one size too small - probably should be on a medium at least, not small/medium. That said, you should be able to safely bring up your bars with the angled stem mentioned above or a steer tube extender like the two pictured below. With a metal steer tube, I think they should be well within spec, but you might want to check to make sure. I wouldn't use one on a carbon fiber steer tube though.