Could I get rescinded?

I’m really worried. I was admitted for Fall 2016. I had all As and 1 B first semester and I have all Bs except for 1 A and 2 Cs 2nd semester. Since SSAR only had up to junior year they haven’t seen my senior year grades yet. Are my second semester grades bad enough to get rescinded? And will they rescind without any warning or would they put me on academic probation?