HELP!!!!!!

Allie • Hi, im 12yrs old and im in 7th grade.
K so when ever I am about to start my period I get these dreams that have to do with sex. Sometimes I'll just moan and lip bite. Is it normal for a 12 year old to feel horney? I started my period at 11 and I'm 12 now. Also anyway to calm my body down from feeling this way?