I dont no what to do?

to start off im 6mounths pregnect and me and my baby daddy been together for a year and 2 mounths and we just started talking about marrage im 18 and hes 21 AND HE WANTS ME TO MARRIE HIM AND I WANT TO MARRIE HIM TO BUT IM NOT SURE WHAT PEOPLE WILL THANK BECAUSE WE ARE STILL KINDA YOUNG AND I NO HE LOVES ME BECAUSE HE GOT MY NAME TATTOOED ON HIM ABOUT 3 MOUNTHS AGO SO ENY ONE HAVE ENY SUGGESTIONS..........