I was initially watilisted at Colby, but then I got accepted off the waitlist and committed. I am in danger of ending the 2nd semester of my senior year with 2 C's (one in AP computer science and the other in English 12). My previous GPA was a 3.55 but my 2nd semester senior year GPA is projected to be a 3.16. How bad is this, will they rescind my offer???