Hello Welcome to HCM Consanguineous marriage or marriage between close relatives increases the risk of fetal malformations and also some genetic disorders in babies, so it is advised that marriage between close cousins should be avoided. But such marriage don t increase the chances of late pregnancy. He visits you only two times a year and most likely it is the reason that you are not conceiving. Most likely anovulatory cycle in you or poor sperm count in him due to stress may be the reason behind failure to conceive. You have mentioned that all investigations came normal, still I would like to advise you both to visit a Gynecologist prior to his holidays and consult regarding exact timing for intercourse. Be relaxed and don t take stress as it will further lower the chances. Try relaxation exercises and breathing exercises to keep yourself focussed. Thanks Dr. Seikhoo Bishnoi, MD