Hello thanks for asking from HCM for your health related queries You are a 28 years old male and have premature ejaculation and small penis size and also poor libido. First of all I would like to tell you that it is not the size what maters in intercourse. In sexual intercourse if an individual is able to get good erection then size is not an important thing. So you should not be worried for small size. For premature ejaculation try to distract yourself during sexual intercourse and this will result in improvement of time. Some exercises like Pelvic muscle strengthening exercises or Kegel s exercise, Master s and Johnson s Start stop technique etc are very useful in premature ejaculation. If symptoms don t improve with these measures then medicines like SSRIs as Dapoxetine have excellent roles. The medicine when taken about 1-2 hour before intercourse helps to delay ejaculation and individuals experience increase in ejaculation time. For poor libido try to have good nutrition. Supplements containing Yohimbin have excellent roles in improving libido. This will increase your desire of intercourse. Other medicines like Tantex Forte also have good efficacy in poor libido. Thanks, if problem persist then consult a psychiatrist for treatment.