Symptoms and causes of male infertility Male infertility is when a man is unable to get a woman pregnant during sexual intercourse. Many symptoms of male infertility go unnoticed and are therefore difficult to detect. This article explains the symptoms and causes of male infertility. Semen Abnormalities One of the common symptoms of male infertility is semen abnormalities. Normally, semen should be white or milky in color and have a thick texture. If your semen appears clear, yellow, or green, it could be caused by blood in the semen or infection. Additionally, minimal or no semen volume may be one of the main causes of male infertility. Reason analysis