Thanks for the query.
Excessive hair growth
on the parts of the body where it does not normally grow is called hirsutism
This can be seen by genetical influence, hormonal
So you better consult doctor
once to find out the actual cause of your problem.
There is nothing wrong in it as many teenage girls can have this problem.
Take the help of your mother in dealing with this.
There are many treatment options for it depending on the severity and cause, so no need to worry.