Hi, Im 17 And Have Not Been Sexually Active But

hi, im 17 and have not been sexually active but id say i have quite a big labia and it seems like my skin is kind of stretched out and its making me reallyyyyy insecure. i do mastusbate and i was convinced that thats why it seems so streched out and big. so im wondering if i stop masturbating for a while and leave it alone, will it fairly reduce it size?