Hi , How are you doing ? I understand your concern. Let me assure you that you will surely get pregnant & will deliver a healthy baby. You get a good baby only when a healthy sperm meets a healthy egg at the right time , at right place & sits at right place in uterus. Accidents like these do occur , but not always. In blighted ovum, either the egg or the sperm was not healthy. We always try to avoid pregnancy for 3 mths after any abortions, so that the underlying facts for the abortions disappears. Don t bother to find the cause, as many are not recurrent. So that s why your doc has advised Oral pills. Folic acid will reduce the chances of abortions. Do have the following tests to rule out few treatable causes Husband - Blood sugars - fasting & post-prandial Semen analysis- preferably at any infertility center Wife - Blood sugars - fasting & post-prandial Serum Prolactin & Thyroid profile aPTT, Lupus Anticoagulant ( LA) Anticardiolipin antibobody ( ACA- IgG & IgM) All these can be causes but treatable . Hope I have clarified your queries, do write back if any more queries All the best Dr.Balakrishnan