You may have premature ejaculation
disease .Most cases of premature ejaculation do not have a clear cause. With sexual experience and age, men often learn to delay orgasm. Premature ejaculation may occur with a new partner, only in certain sexual situations, or if it has been a long time since the last ejaculation.A lot of people get the disease because of prostatitis
、orchitis or epididymitis
I suggest you to treat with tradition Chinese medicine -"Diuretic
and Anti-inflammatory Pill",It can cure the disease about 3 months .