The seminal fluid flows out can cause sterile

Doctor Ke:
I marry for 3 years, until now still did not have the child. Inspects both sides to the hospital to be normal.  but after discovered each time the sex life the seminal fluid always is suitable the vagina to flow out. Asked like this can cause sterile?
Zhejiang land ××
Land reader:
In the seminal fluid includes the coagulation factor. Its function is causes the seminal fluid to coagulate assumes the rubber frozen shape, urges to mount the thick seminal fluid to mount is attached to the vagina wall and on, cannot flow at will, strengthens the opportunity which the spermatozoon and the ova meets one another. After approximately 5 minutes, the seminal fluid meets the fluid to turn into the thin liquid, by now the spermatozoon then delightedly set out to "the destination", completed "the birth mission". After the sexual intercourse the seminal fluid flows out is very natural, is not causes the main reason.
But to husbands and wives which married has not been pregnant, for prevents the seminal fluid outflow too to be quick, may when the sex life puts the pillow under the wife buttocks. Husband's movement envies crudely, instantaneous should consciously reduce the movement scope in around, causes the seminal fluid to shoot as far as possible in the vagina deep place. After the sex life had ended, the bride's side do not want eagerly to get out of bed, should better raise the buttocks in the maintenance in the situation, lies supine for a hour, causes more spermatozoa to enter in the palace cavity.