Struggling with My Identity in a Relationship

I have no idea what to do. I am in love with my girlfriend. She is one of the best people I’ve met in my life but I am losing myself. Everything that was mine is now ours. My mental health is deteriorating FAST. I was in residential treatment last May-August and I made SO much progress. I started to learn how to cope with my anxiety in a healthy way and I wasn’t making myself sick anymore. I met my gf less than a month after I got home from res. I have no idea what a mentally stable me looks like on it’s own. I don’t know who I am anymore. I am a camouflage girlfriend. We have SO MANY huge differences that I think will affect our relationship. She isn’t family oriented and my family is my entire life. She wants to move to DC to be a lawyer but I would miss my family. Her mom hates me because I didn’t go to college so I have “no ambition” even though I work a really good job. She wants kids, I don’t think I do. She wants to get married, I don’t think I do. I have no idea what to do. If someone could give me any guidance or even just talk to me I would really appreciate it. I need someone really bad.