I tore my nipple omg

This is a little tmi, but I really need help and can't go to my mum for it 😣

So I was masturbating yesterday and my nipple are always super sensitive so I love tugging/rolling them with my finger to help turn me on more. Usually it's fine, but yesterday I suddenly felt a sharp pain and when I examined myself there was a tear like 1/4 way around the nipple (like where the base of the nipple itself is attached to the areola).

It's not bleeding but it's a bright pink and super tender and hurt when I was in the shower. So far I've cleaned it with an alcohol swab and put a plaster on it (so it doesn't get pulled more by my bra) but I really want to know is this common and how do I help it heal faster, or is it something I should be worried about?