I NEED MAJOR HELP!!!

Carisma

Ok guys, so I am 12 years old now, and I masturbate... I have never gotten my period, and the last thing I used to masturbate was a pretty thick handle from a hairbrush... I started bleeding down there and I do not know for sure if it is really my period 4 the first time. Did I break my hymen? Btw what is a hymen???