Following strategies, in combination often help to delay the climax. 1. Stop-start technique of behavior therapy (keep it up) 2. Female on top with active role. 3. Double condom 4. Medicines like Fluoxetine 20 mg day or Paroxetine CR 25 mg per day. (To be taken under medical supervision only) 5. Pelvic muscle strengthening exercise regularly. (As if try to hold urine intermittently during voiding) 6. Penile squeeze technique applied at the point of ejaculatory inevitability. 7. Applying a local anesthetic ointment to glans penis prior to penetration. The width and length of penis vary from one individual to another. The normal length of vagina is about six inches. Only outer one third and the front wall of vagina have nerve fibers and hence sensitive to stimulation. Rest of inner two third is largely insensitive. So if you want to arouse your partner during sex, you should focus on the areas of maximum nerve endings hence clitoris and inner lips or labia minora, the outer wall and outer two third of vagina. So for female sexual gratification, the size of erect penis could be anything from two inches or more! You remember that what is important is strength and not the length! Its the technique that characterizes lover inside you, not size. There is no proven medicine to increase semen volume. Volume and consistency varies on age, sexual stimulus intensity, period of sexual abstinence. It has nothing to do with sexual satisfaction with the partner. Anal sex depends on partners experiences and choice. Discuss freely with your partner. I hope this will help you. Have a balanced diet and regular sleep, exercise in your daily life. Wish you good health.