I’m afraid of breaking my SO’s heart

My boyfriend and I have been together for almost 2 years, we’re both 20. I’m just really struggling at the moment. I have these doubts about whether I have the same feelings anymore for him. I get in my own head, his family are not welcoming and I have always thought that I don’t know whether I can look past that whilst being with him. I just do know what I’m feeling at the moment. I convinced I should end this because I don’t know if things will change. I just feel so bad and I don’t even know what to say to my boyfriend.