Most of the murmers are self curable, give it some time.
Report to the nearest ER in case of Acute chest pain
You can see your regular doctor and tell him to take a second opinion from a cardiologist
which is mandatory as you have reached the age of 21, or should I say as early as possible.
Might be a panic attack
and see a gynaecologist, because you have a full life ahead.
Best of luck.