Teeth Whitening tips? PLZ! help is needed now!?

okay, I am 12 yrs old. I just was recently in the hospital for about 5 months, and the 1st month I was in such critical condition that I never got a chance to brush my teeth. any tips on how to whiten them? they are yellow now and any easy tips on whitning them? I brish them 3 times daily. thanks. =D
--------------------
Teeth whitening with Baking Soda at home is an old-time favorite. Baking Soda won't bleach your teeth, but it will help get plaque off and make them shine. You can use it alone on a damp toothbrush or mix it with toothpaste to help neutralize the salty taste. Recipes of teeth whitening with Baking Soda : Step : Wet your toothbrush with cold water and dip it into baking soda. Recommend to use of white bristles toothbrush. Step : Brush teeth for 5 minutes 2 times a day. Step : Spit the baking soda toothpaste out and rinse your mouth clean with water. If there is a tingling or burning feeling in your mouth, this is perfectly normal. Effective : In fact, most people depending only on baking soda for tooth whitening should not expect to see drastic results. But, for a quick brightening of your teeth, baking soda is a good way to go. Attention : Be warned that Baking Soda is an abrasive and if you use it too much, the enamel on your teeth can get damaged. Dentists recommend baking soda as a teeth whitener no more that 2 times per month the site give me a lot of help, u can visit it : http://www.teethwhiteningbest.com/teeth-…
Source