I think i am losing my hair help!!!!?

I am 16 years old and I think I am losing my hair. It used to be really thick and smooth but now my hair is really thin. every time i wash it or brush it loads of my hair comes out and i don't know why. please help me i don't know what to do.I think i am losing my hair help!!!!?
Some birth controls cause hair loss, that could be a reason. It could also be if you wash your hair too much, or straighten it/iron it too much. You should not brush your hair while it is wet, because it breaks your hair and can cause it to fall out. Let your hair dry naturally if you want to brush it, and only shampoo a few times a week. :)I think i am losing my hair help!!!!?
it's probably Falling because maybe your hair is to healthy and you new to use other types ofshampooss so most of you hair falls because it's way to healthy that's what happened to my friend in the 4th grade but not that much fell only a little.
Hannah, we all shed between 20 and seventy hairs everyday, for every one we lose a new one is grows in.
Just don't brush your hair too much. Don't use anymore conditioner, and avoid tight ponytails. Let it down 2 grow.