Me & my fiance are set to marry in july of this year but i think he only wants to so i can move with him.?

we have been dating 2 months, engaged 2. he was my first time, and i really love him...but thinking about marrying to move in with him sort of makes me wanna throw up. my sister keeps getting mad that i'm getting married at 19, but it's what i want to do. but for the right reasons!!!! he keeps saying he wants to get married because he loves me, but one day i said "i think we should wait to get married" and he said "then how am i going to get you to groton?" (where we're moving) and ever since then i've been skeptical of his intentions. the two of us always fight a lot over having , too...tmi i know but he is really into it and im not. help?