An advice from an old experienced italian lady: don't leave immediately!
Leave the "dust" fell down on the floor, and take your time to rethink about the entire situation.
If you moved here, leaving your Country and went through the (endless) process to obtein the GC, it means something, right? Just now was a fight. It happens sometimes to say things you don't really think only because you are angry. Now I try to see your point: "I'm here alone, nobody from my family, US is a difficult Country for living, maybe some problem with language (as I have!)... and this man I gave everything for, the love of my life, now became my worst enemy!!!"... It is very human reaction thinking to run away!
But take a bit for thinking about it , and all the consequences it would bring. It's worth to do it? Are you really sure that coming back to your Country is the solution that would make you happier and safer? If you leave now, probably will be very difficult to step back. Running and doing things on the spur of the moment never solved a problem. So, unless you are afraid for your security, I would take some time for myself, just to clear my mind.
Good luck!