Hello and welcome to Healthcare Magic. Thanks for your query.
From the description of your problem, you seem to be suffering from
Premature ejaculation. Now, this is a common problem in young males and can be overcome by practicing certain exercises and sexual techniques.
I would advise you to practice the "squeeze technique" when you are masturbating. In this technique, the penis is stimulated till the point when you are about to reach orgasm and at this point the base of the penis is squeezed tightly with the fingers till the erection weakens. Another useful exercise which can help you improve ejaculatory control is Kegel's exercises. If you practice these regularly, then your problem will gradually resolve.
Regarding your doubt about penis size, if the erect penis length is less that 7 cm, then you are have a problem called
micropenis. If not, I would advise you not to worry about this.
You have also mentioned about another problem of having some girlish features. For this, I would suggest that you consult an
endocrinologist to have a detailed physical examination and if necessary, hormone tests.
Hope I have answered all your queries.
Best wishes,
Dr. Jonas Sundarakumar MBBS, DPM, MRCPsych.(U.K.)