Scared out of my mind

So today, I woke up to my father calling me from the level below. Our relationship is good at this point. We are getting along and spending time together. This is better than the same time last year when we were ignoring each other. But anyway, he called my name and I answered a tired, "Yes?" He asked me if I was still sleeping... "I was..." I replied. Then he told me that when he got back from work for his lunch break, he wanted to talk to me. About what? I don't know. But I am really scared. If it was something like, "Could you wash the dishes?" Or "Let's play soccer when I am done with work," he would just say it. But he didn't, so that must mean that we are having a serious talk, or I am in some type of trouble. BUT I DON'T KNOW WHAT I COULD'VE DONE SO ITS IMPOSSIBLE FOR ME TO FIX BEFORE HE GETS BACK! And I am sitting here and my heart is racing and I feel like I am going to puke because I really don't like dealing with him when he's mad. I haven't lied or said anything I shouldn't... I have been at my grandmas house all week babysitting my cousins. The one thing I did by myself was. Go to my best friends house and watched chick flicks all day. Maybe he's mad that I have been hanging out with his estranged brother... Who knows... What do I do? I'm so scared! I may spaztically update and add new stories as comfort... so watch out!