And I keep on seeing my underwear brown and it even leaked once ig

Okay so that brown stuff in your underwear is probably discharge, and it's totally normal. Discharge is just your vagina cleaning itself, and the color can change based on when it comes out and how long it's been exposed to air.

What it is

Discharge is a mix of fluid and cells that comes out of your vagina. It's usually clear or milky white, but sometimes it can look yellowish or even brownish, especially right before your period starts or after it ends. The brownish color is usually just a tiny bit of old blood mixing with your regular discharge. It's like your body's way of getting rid of old stuff.

What to do about it

If you're noticing a lot of discharge or if it feels like it might leak, you can wear a panty liner. They're super thin and just catch any extra moisture so your underwear stays clean and dry. Make sure to change them regularly though, just like you would with a pad during your period.

It's usually nothing to worry about. But if your discharge smells really weird, or if it makes you itchy or feel uncomfortable down there, then it's a good idea to tell a trusted grown-up so they can help you figure out if you need to see a doctor.