Hi, Amy. I just mentioned this in another post. You can go to your local sporting goods store; buy a rubber mouth guard, for around $3.00. You have to follow instructions on the back (boil it for a few seconds; then put it in your mouth, bite down). As it cools off, it will contour to your teeth. These make excellant mouth guards...as good as one's costing a lot more. A good friend of mine told me about this. She had just bought her son an expensive night guard, through their dentist; then she found out about doing this (for herself). She tried it, and said these ones are as good as the more expensive one she bought for her son. I just use a tooth brush and tooth paste, to scrub mine every morning....These last for a very long time.
But, if you'd prefer to have your dentist make one for you, that's fine too. Just do something fast, before you do some permanent damage to your teeth/jaw. Good luck to you....Deb47