Doing masturbation since 2012. Properly.

You are unnecessarily worrying about things that are natural or mild infection. Pre ejaculation is normal. It occurs more in young as youth gets many sexual stimuli during everyday life e.g. visuals of girls, semi naked women in ads, porn clips etc. The guys get aroused and body assumes it is going to have sex, and releases the pre ejaculation fluid in preparation for sex Regarding skin near your scrotum being loose. Its normal too. In summer the scrotum skin is looser than in winter as it helps maintain proper temperature. High temperature is bad fir sperm production so loosening of scrotum helps reduce temperature. Fir itching, you may consult a skin specialist for evaluation whether its normal jock itch caused by sweat etc or fungal infection.