Alright, I noticed that when I ejaculate my sperm it comes out as normal colour but sometimes It comes out normal with small yellow jelly things no bigger than 1mm or my sperm comes out with a hint of yellow, I know I don't have HIV/STD as I never had sex EVER!!! And i know you can't get STD/HIV from masturbate yourself as I did alot of research, But I'm just curious why it is like it. I have masturbated a few times a week for 3-4 years but I'm planning to stop for a while,