I've recently been diagnosed with thickened and redundant anterior mitral valve with trivial mitral regurgitation. do i have to worry?

Do you have symptoms? More details are needed

Your description suggests that you had an echo which showed these abnormalities that are consistent with mild mitral valve prolapse. These findings warrant regular follow-up evaluations to be sure that there is no progression. Your cardiologist may also recommend antibiotics prior to dental and other surgery. Most individuals with this abnormality have a benign course but need to be followed.