Ha ha, i remember my first time. Ahh good times... First time i thought i broke my penis. As was said above, it's only natural. If its a clearish white, then your looking at sperm most likely, but more so semen. Semen is the clearish liquid that the sperm is carried in. Mine became coming out when i was younger than you, so it is definitely normal to have some at your age. However, if it really bothers you that much, tell your doctor about it on your next visit. It may seem intimidating and scary, but your doctor is there to help you.