I was also diagnosed with MVP
at the same age. You need to see a Cardiologist to get your questions answered better with your own situation. I ended up with severe regurgitation within a short period of time after my mild regurge was found (months only), which is not the common. Yours may stay mild for a long time, but make sure to keep an eye on it. Keep this in mind: you can get the valve REPAIRED vs. Replacement if it is caught in time and no permanent damage done to the pathway from how the blood is ejected out through the valve. Don't let the doctors tell you to wait until you can only have it replaced. I had a repair done 2yrs ago and couldn't be happier (I actually went out-of-state to have the procedure done). Please do some research on the web regarding this if you ever get to that point. If you are not symptomatic at this point, you should be fine with the mild regurg. The only precaution I was given before my surgery, was to take an antibiotic before any dental work was done or any surgeries. Live your life, do things as normal, just pay attention to when things just don't feel right or you become symptomatic and see your doctor (one that will listen). Hopefully you can find a good cardiologist, it took me 3 tries before I found the one I have now. Good Luck.