Need advice.... what to do?

hey everyone.. I am 19 years old I am engaged to my amazing man that is turning 24 this month. his parents have bought a house upstate for him , themselves, and for his sister. soon around March he will be moving up there and quitting his job. where we live is 3 hours away. I am currently in college but had to change my major cause I wasnt doing so good for me to get into my major which is Radiology. I changed my major to therapeutic recreation which I don't know what the hell I'm really doing in that position. We was already planning to get married around next year in Aug or July. However, my parents you could say don't act like parents... dont judge me it is they have three daughters and two of them have left and don't want to talk to them or be around them and now one is left which is me and im seeing the true colors of these people. let's just say I could be starving in my room and they won't know. But I have changed my plan and wanting to move with my fiance upstate because I am having my future there and I don't want to do this major that i changed and dont forget I am paying out of pocket I am not getting financial aid because my parents don't want to give them bank statement for me to receive financial aid. I don't want to waste my money doing Therapeutic Recreation that is starting this week but she keeps saying she wants me to get a degree where I want to go upstate with the love of my life and finish my school there, plus it is so much better, I be with him and everything. plus his sister which is a mother of two and married she is a nurse and going back to school over there but she is going up there around Aug. so in the meantime me and my fiance could get jobs and when his sister comes me and her will apply together for college.

I'm I wrong wanting this?

ive done nothing wrong with these people my mom complains about everything I do everything is so negative and only her way she never let me go hang out before I was engaged and she still is acting the same way but worse...

back story: she has push me away from my older sister fot years and now me and her is reuniting back again my mom tells lies just lies lies after lies but she goes to church and appreciate people there but not her own children