Fighting while pregnant. Advise!

Sara • 25 | mama to two beautiful boys ❤️
Around 3 months ago my SO and I moved from our home town to the city (about 10 hours away from home). It was my idea as I wanted to do a course which I had always dreamed of doing. We stayed with friends till we got a rental place of our own where we have signed a 12 month lease. I am really not enjoying where we are living and just am missing my family and life back at home. We have been fighting about this pretty consistently since we moved. I am now 7 weeks pregnant and am worried that the fighting and stress of it all is bad for the baby. Tonight my SO said to move home now and he would stay on. My plan was to stay till the lease runs out and move home together when Bub is around 6 weeks. But now my SO says he isn't moving home and I need to sacrifice and if I leave now or at the end of our lease we are over and I'm the one who's taking his child from him and he will hate me. I just need some advise and help. I'm worried about the Bub dealing with all this stress and myself because everyday I just feel so empty and lost and am worried that after Bub is born it will be worse. I feel as though I just need my family...