Surgery to remove your prostate gland means that you no longer ejaculate any semen (dry orgasm). So you will not be able to have children by natural sexual intercourse. This is because your sperm cannot pass to your partner during sexual intercourse.
Male infertility causes don't usually manifest visible symptoms, it's only after a couple notices that they are unable to conceive naturally and they need professional help, here is where the man will find out that something is wrong.
There is no blame in infertility, both men and women can contribute to infertility equally. It is often thought of as only a woman’s condition. However, approximately one-third of infertility is attributed to the female partner, one-third attributed to the male partner and one-third is caused by a combination of problems in both partners or, is unexplained.