Is it safe to be pregnant even if a woman has Mitral Valve Prolapse?

if safe, at what age should a woman with mitral valve prolapse be pregnant?

I have searched this article for you, this will help you out:
The mitral valve sits between the left atrium and the left ventricle. Oxygenated blood from the lungs flows into the left atrium, then passes via the mitral valve gatekeeper to the left ventricle in preparation for the burst of propulsion to the aorta. In MVP, the valve is weakened by causes unknown, and flaps backwards into the left atrium during the ejection of blood from the left ventricle. Although MVP is associated with many serious heart defects, it is usually a benign condition that merely provokes disturbingly weird symptoms.
Palpitations, then anxiety (either because of the palpitations or along with them), shortness of breath, unusual chest pains, and panic attacks are famously associated with MVP. It is difficult to separate the anxiety with as opposed to the anxiety because of the palpitations and chest pain, but the cluster is certainly a legitimately recognized symptom complex attributed to MVP. It's no fun to suffer from symptomatic MVP. In addition to the above discomforts, there are also the psychodynamics of being blown off as an hysteric. Anger, embarrassment, and the added expense of rotating doctors only make life worse.
It might be expected to be worse in pregnancy, since the increase in blood and plasma and the changes in cardiac activity that are normal in pregnancy should challenge the valvular system more than usual. But actually MVP improves in pregnancy in most women, because the physical changes in the heart tend to realign the mitral valve components into a more normal position.
With most pregnant women who have MVP being symptom-free, the biggest concern is whether to treat them with antibiotics at delivery as would be done with patients with other valve damage. Dentists often treat MVP patients with antibiotics before dental procedures, so patients may expect them at the time of delivery. But the current thinking is to forego any antibiotics unless there are abnormalities of heart function along with the MVP or complicated deliveries. Uncomplicated vaginal or Cesarean deliveries don't necessarily need the antibiotics for just the MVP.

In summary, Mitral Valve Prolapse for the most part poses no challenge in pregnancy, and its symptoms are even seen to improve. In fact, if there are troubling symptoms one should suspect another cardiac condition that may have not been challenged enough to be obvious before pregnancy.

CONGRATULATION IN ADVANCE.

My mother has it and she had two children, one at 22 and one (me!) at 24.

My daughter was diagnosed with MVP at age 14. She has had 5 pregnancies, 1 miscarriage and 4 deliveries. That's 4 deliveries in less than 5 years. The obvious answer here is to talk to the OB that will deliver you to have your particular case evaluated since we don't know all the details.

It is fine as long as your doctor monitors you and knows your level of regurgitation. Please report any new palpitations at once. You must keep your blood pressure under control also. Congrats!