Is it normal that i randomly wet my pants?

Its not alot but i still think it has potential to be a big deal but anyways..i just noticed this a few days ago. I was with my grandpa and my brother at a robotics competition and i felt my pants getting damp. It wasnt alot but then i noticed it and it stopped. My underwear was wet but there was only a dot on my pants. This usually happens about every night. I wake up and my underwear and pants (if im wearing any) usually are a little wet but there isn't a puddle. It only feels like i was sweating. i thought that's what it was before until i finally decided to smell it and when it happened when i was awake (this was pretty much a comformation it was actually pee) should i decide to wear diapers? Or just live with it? If i did have to wear diapers it would have to me in the day too not just in the night shouldn't it?