Hello thanks for asking from HCM for your health related queries I can understand your concern. A lot of males have problems of erection at your age and in most of them the reason for erectile dysfunction comes out to be psychological. You have issues of poor erection but has been involved in sexual intercourse with a girl and this practically rules out any organic cause for your symptoms. First of all I would advise you to visit a physician for evaluation and to rule out any hypertension or diabetes mellitus. Both these are common medical causes for erectile dysfunction. Once the medical causes are ruled out then visit a psychiatrist for help. In erectile dysfunction PDE-5 inhibitor drugs like Sildenafil (commonly sold as Viagra) or Tadalafil are commonly used. Both these drugs help in achieving good erection if taken about half to one hour before intercourse. Some antidepressants like Trazodone can also be used. Trazodone helps in good erection and this drug also improves the mood. All these are prescription medicines and visit a doctor for proper detailed prescription. If you have been tested and have test report then you can ask a PREMIUM question and can upload the report there. Don t be distressed the problem can be treated with proper medicines and no need to worry. Thanks, Hope this helps you. Take care. Dr. Seikhoo Bishnoi MD Psychiatry