Question about my period?!

Question about my period?

when i sleep i usually wear a pad. and i sleep on my side. At night, i don't bleed nearly as much as i do when I'm up doing stuff, which i know is normal. But anyway, when i get up in the morning the blood just like pours out! lol, i know it sounds weird, but is this mayB b/c it like sits somewhere and when I stand up it all runs out? i mean it's A LOT, like more than what's already there from all night. is this normal? and this blood is really thin too..

I am 16 years old and on birth control if that makes a difference.

2 weeks ago
im not fat but thanks anyway babe!

& yes, it does feel like im wetting myself, lol, kinda gross, huh?

Yes that is normal. When you are laying down it cannot flow out as easily, so of course when you stand up, gravity takes over.
If you are not comfortable with this then use a tampon. It will help to keep from soiling our underthings and your linens too.