MS is usually caused by rheumatic fever. A disease rare in developed countries today but that still persists in a large part of the world. When complicated by AF, rate control and anticoagulation are mandatory in the absence of pressing contraindications. Once more than mild symptoms exist or once asymptomatic pulmonary hypertension occurs. Mechanical relief of MS is indicated. In most cases, such relief is provided by the durable commissurotomy created at BMV. In other cases, surgical correction is needed. After these interventions, prognosis is excellent. Although I have heard of scenarios where mothers with this conditions give birth. However, you must have seen a cardiologist for more information concerning the same. If it cannot be applicable in your case you can opt for surrogacy.