This is the dumbest question I've ever seen. U can't just stop your period for a day and then let it carry on. Once it starts it'll go until it's finished. You're a child so your periods will be irregular for a while.
Your period will last for as long as it takes. It's just the way of the world and there's nothing you can do about it, I'm afraid.
Why are you asking guys to help?
You can't be serious.
Oh yeah she's serious, dense , but serious. lmao :)