Rushing into marriage?

I've been with my guy for 6 years. lately I've really been thinking of marriage a lot lately, and getting upset whenever I see wedding rings or just thinking that Im never going to get married. I also want to start trying to have a baby.. but sometime my guy is back and fourth.. saying he does.. then he doesnt want kids .or marriage.. he always says hes joking that he wants to be with me forever and wants me to be the mother of his kids.. I dont know why I've been getting so upset with all of this lately.. Am i just overeating about this whole situation? How do I just leave it alone without being so sad about this? We both live at my parents house and hoping to move out sometime in Feb. I'm 26 and his 29. Does anyone have any advice for me?? I would greatly appreciate (: thank you