What could this be? I'm a 20 yr old male and I have been having a clear, sometimes cloudy discharge from my penis throughout the day that I have to milk out, most comes out in the mornings. It doesn't happen during sex or when I become aroused. I've been h

Regardless . Regardless of the fact that you are "almost 100%" sure you do not have an std, you should definitely have an std test to definitively rule this out. On the other hand you may be dealing with leakage of seminal fluid (pre-cum) which is fairly common in young men. My best advice is for you to see a doctor an have a medical evaluation and testing to make sure this is not an infectious process. Best of luck.