How can I tell if I'm a sociopath or not?

I think I might be. I have a very hard time feeling anything. I have emotions but a lot of them are very dulled down. It's like inside I really don't give a shit. You know how you're supposed to like someone then you also want to know everything about each other? Well I do want that but most of the time I'm just worried about me. "What's he gonna think of me when I tell him this?" "How is he gonna react when I do this?" "If I wear this will he say something or notice?" It's like everything revolves around me. I've been in a couple very serious relationships but they usually leave because they can't handle me. I'm CONSTANTLY asking myself, "What does love even feel like? How do you know?" I thought I knew. Like I REALLY did. But then I was wrong and it's like I can't even feel much. Even PHYSICALLY. I dont know what's wrong with me. I'm in my late 20s and already have been diagnosed with depression and panic disorder. But I can't help thinking that my lack of emotion is something different. I've always thought like this. I've always been so analytical and precise. I have my life set to a strict schedule. I can't help thinking that something is wrong with me. RE: I edited this post to answer some questions. But I also wanted to say that I am just wondering if anyone else experiences things like this?