Dear service user, Thank you for writing to Healthcaremagic. I understand your concerns. This is absolutely normal and there is no need to worry about it. Sexual arousal can occur many times without one s conscious awareness (As it happens during sleep as wet dreams). This does occur when you talk to girls. You may even not notice actively, but it does happen in your mind. When sexual arousal occurs, a fluid of sex organs and tiny glands in the way of urine tube come out from penis. This is not semen. The smell of the fluid and consistency may be like semen. When you will engage in regular sexual activity like intercourse or masturbation, this will be reduced or disappear. No medication needed. This is not a disease. Wish you good health.