Yes but at this age you should make sure it is not what they call a wet dream...... Is it urine or semen? And hey I'm no sicko, don't feel obligated to answer...... But at that age wet dreams may be as prevelant as urine soaked.
For the time being, yes. It is probably better not to drink fluids before bedtime, and / or maybe see a doctor. Considering your earlier question, that you do indeed enjoy the feeling, please be reminded that it is a potential health risk. Prolonged exposure could cause many different health issues, such as extreme rash, possible penile infection. You should probably speak or chat with others that have the same "malady", to learn of different cause and effect scenarios, and how to deal or learn from them. Good Luck.