Hello dear I understand your concern Your symptoms could be due to Psychological problem like stress, anxiety, marital disharmony, excessive arousal, fatigue Medical problem like diabetes, hypertension,overweight, defect in blood, venous and nerve supply of penis. I would suggest to consult urologist and undergo complete health check up, blood tests like blood sugar, lipid profile, CBC, ESR and USG pelvis to confirm cause. Following treatment will help you: Psychological problem require psychiatric consultation and counselling. Do regular exercise like walking, running, yoga, kegel exercise Spend more time in foreplay and even during intercourse do foreplay Do ejaculation before intercourse purposefully Use double condom and apply lidocaine gel Try women on top position Eat healthy diet with lots of fresh fruits and green leafy vegetables, drink plenty of water, Following drugs will help you after proper evaluation: Tablet Co Q Tablet tetrafol plus Tablet sildenafil 30 minutes before sex Hope this may help you Contact further if follow up needed Best regards Dr. Sagar