Clingy boyfriends or is it just me?

I have a boyfriend and he is really great, but i feel that this relationship is much more serious than i thought it would be and we've been going out about a month, this is my first real boyfriend and i'm 15. but he says stuff like we'll be together for years and stuff like we gonna have so many kids, and if i dont answer the phone he'll call me 10 times or text me over an over again asking me if i'm okay?. and when we're together he's always all over me and touching me (which i dont really like cause i find PDA embarrasing) and squeezs my cheeks(which i hate,and i told him but he wont stop). i dont know if its just me or if anybody else in my same position would have the same feelings of maybe wanting to break up?