Hello thanks for asking from HCM for your health related queries I can understand your concern. First of all just to Psycho-educate you I d like to tell you that size of penis remain constant and can t be increased by any oils or other quackery formulations. Your size of 4 inches is normal and if you are getting good erections then there would be no problem during intercourse. Just remain confident. Most of average height males have almost same size so no need to worry. Just don t think about this thing again and again. Now coming to the problem of early ejaculation. Early ejaculation in most males occur due to anxiety, poor knowledge of sexual intercourse, hyper excitation etc causes. Relaxation prior to intercourse, distracting yourself during sex helps to delay ejaculation time. If with this the time doesn t improve then other option is to visit a psychiatrist for help. Medicines like SSRIs especially Dapoxetine can help to delay the ejaculation time and will solve your problem. Please visit a doctor for prescription of this drug. The drug can be used on SOS basis also. Thanks, Hope this clears your doubt. Take care Dr. Seikhoo Bishnoi (Consultant Psychiatrist)