If I bleed a lot today, will I bleed less tomorrow?

I just got my period today at 11. I have a tennis match tomorrow at 10:30. It's a big thing too. At least for me. Out of fear of staining my clothes, I'll screw up. And I have another match today with 7 other people from my class. If I bleed a lot today, will I bleed less tomorrow? If so, what will speed up the bleeding? If not, what precautions should I take?If I bleed a lot today, will I bleed less tomorrow?
You can't speed up the bleeding but you can do something about not showing.
Wear a super tampon for heavy periods and a Maxi pad as well.
That way you have the first line of protection with the tampon which will take a while to fill even playing sport.
And then you have your back up. Your pad. Which will take hours to fill up too. Tampon leaks no one knows. No show at all.
You can then concentrate on your game and not your bum.
It does really work. I have done it many times.
probably