Trying to get on track

I'm really struggling. I don't know really if it's a major depression coming on (feels like it), or if it is just stress overwhelming me. I feel so out of place, out of touch, unwanted. I feel myself starting to retreat-finding excuses not to do things I normally do, barely functioning each day. I hate talking to people in general. Really I do. I hate meeting new people and putting on a happy face. I just hate life right now.