Sorry to hear you are experiencing this. You are definitely not alone in having incontinence, as a lot of young people have similar issues but keep it to themselves. Have you found out the cause of your incontinence? The best thing to do is visit a Doctor to rule out any treatable causes.
Do you wear a protective product? Wearing a pad or protective pant can help you feel more comfortable, and protect against leaks. If you let me know how heavy your incontinence is, I can help recommend an ideal product for you.
As a 22 year old woman I sympathise as I suffered the same experience at school. Never underestimate how discouraging it is to be different from your friends. They were understanding and sympathetic but incontinence dominated everything I did. Boyfriends were very infrequent and one or two dates ended prematurely. University is easier and my diet has changed for the better. A good brand of pants has helped enormously. Accidents still happen but my frame of mind is easier.