I hope you will get a new toothbrush. While the one you have may look good, it's probably not working well.
Hopefully, you visit the dentist each year. Usually they give you a free toothbrush every visit.
Me, I get a new toothbrush every 3 months or so.
Maybe you should be hiding your teeth instead of your apples if you've been using the same toothbrush for 18 years. You nut.
( Adults and children should change their toothbrush every 3 months because they become worn out and are not as effective as they once were. Exceptions to this would be if you were using an electric toothbrush, and the manufacturer states otherwise. Some electric rechargable toothbrushes have very good brush heads that only need to be changed every 6 months. If you have gum disease, you should change your toothbrush every 4 - 6 weeks because bacteria can harbor in the bristles. You should always rinse your toothbrush out with hot water after every use and change it after you have been sick.)