Hello! I am 22 years old. One years ago I am diagnose with mitral valve prolapse easy in heart.Doctor doesn't give drugs and tell me don't concern because it isn't problem.I am very anxious about this.I think that I have a problem with my heart.The blood pressure is 110 to 70.Today I have strong pulse in the neck and I didn't know what is.When I am in stress I feel like sensation of heaviness in the chest.How can you help me? Thank you