Unsure Feelings

I don't think I can say that I have ever felt the way i'm feeling right now. I had a falling out with my absolute best friend and we kind of talked today but i'm not sure how to approach the situation. Are things going  to go back to the way they were? Does she secretly hate me and just talked to me because she felt alone? I hate not knowing whats going to happen with her. I really hate the unknown and being unsure and questioning everything.