Hi, I understand your concern. Your symptoms most commonly could be due to Psychological issue like performance anxiety, stress, anxiety, fatigue. Medical causes like obesity, problem in back nerve, low testosterone, smoking and alcoholism. I would suggest to consult urologist and undergo health check up, routine blood tests, testosterone and USG pelvis if needed. If all tests come normal then there is no medical causes. Then you require sex counselling and psychiatric consultation. But meanwhile you can take following advises: - Just be relaxed while having sex, avoid stress, anxiety - Spend more time in fore play and during intercourse also involve in foreplay - Do regular exercise like Kegel s exercise, walking, running and yoga - Try women on top position and avoid sex when you feel fatigued and low - Eat high protein in diet and drink plenty of water If problem persists then drugs like Tetrafol plus, Sildenafil and Paroxentine will help you after proper evaulation. Hope this may help you. Contact further if follow up needed. Best regards, Dr. Sagar