why do i keep having blatter leakage?

Im 16 and everytime i sneeze, cough or laugh my blatter leaks. I have to wear a lite pad everday so that i feel comfortable. Its irritating to have this problem and its also emembarrasing. I would like to stop the leaks but i dont know how. Please help me?

see below link
http://homeremediesforyou.com/1495/what-can-i-do-for-weak-bladder-muscles