Hi, Welcome to the forum. Clofert -50 is an ovulatory stimulant. It helps in the ova (egg ) formation in women. You can get your follicular study done to know the exact day when your ova is likely to get released. Sperms remain alive for 72 hours. In a women who has a 28 day cycle ovulation takes place on the 14th day (approx). If a couple stays together between the 12th to the 18th day (approx) . The sperm may reach the ova and fertilize the egg. Clofert is an effective medicine provided the doses are strictly followed as advised. If your spouse has already had semen analysis and has a normal sperm count( 20 million per ml and 85% alive and active) chances of conception are high. Eat well, exercise and have patience. Stay connected with your treating doctor. Take care.