I wet myself :(?

I'm 17. We all wake up late at night maybe about 3 in the morning coz we just have to go, right? Well, I never did do the "waking up part" My boy seems to prioritise sleeping above waking up to do business. It's like "Gotta go? Sleep is more important" So Without waking up, I just...go. It's always been like that and only happens once or twice a month. Maybe I could go a month or 2 without it happening. When I go to sleep with a headache or just sickness, IT Is certain to happen. 90% of the time it happens. I always sleep in my bed longways (mostly on my right side, sometimes my left). When I wake up wet, I am most always curled into a ball by myself. I wouldn't even notice myself doing it during the night. I try not to drink a lot before going to bed and it HAS (I won't say it hasn't) belittled my self confidence knowing I am 17 and still have...Late night accidents. If I wake up wet, it doesn't make me cry, or even upset. It's just well...a niusence sometimes. I always sleep with a towel between me and my sheets. I don't know if I should tell my parents that I still wet myself. It's embarrassing... What do I do?