Im 12 turning 13 in 3 weeks..i dnt know wats rong with me! ive been dreaming of girls and having sex...?

well yesterday i was dreaming i had a girlfreind..tht girlfreind is my freind..not my girl girl freind.. so i was dreaming i was making out with her..and then she took me inside her room..and she started taking off my pance..and rubbing my penis ..it felt so good and i keep monanig at nite..my sister tells me i always moan in my sleep..2 days ago i was dreaming i had sex with my sisters freind..and 3 days ago i was dreaming i had sex with some random hot girl..how can i stop these dreamss! its making me ho****...i know this is wierd but i just want some help..and i masterbate..like every other day..it feels good really good..