Can a 13 year old publish a book?

Ok, so i’m almost 13, and i really want to publish a book im in the works of writing, its about a vampire (go figure) and i just think when its over, it could be a success. Its very interesting, and i love it. I just want to know if i can get it published, my only concern is that (i do have kissing scenes, and whatever you call it) they might think i’m too young to know some of the things that are in my book. Like i have a really graphic (making out) scene, and i just really am curious, i might work on it and wait unitl i’m 18 or something, but i really just want to know if i can.