Why Does Sperm Comes Out Of Vagina After Having Sexual Intercourse?

ave been aving vaginal dischage for over 4 yrs and even done uterus evacuation bt it still kkeps coming after some time,a scan was done and the doc. said that it was the womb that was producing it and it smells,he said dat my womb is moving backwards cuz anytime i make love with my partner his sperms coms out,i ave been trying to get pregnant,pleas help