Rescind Admission for Purdue?

I already got accepted to Purdue. The problems is that my first semster grade is not so good. I got 4 C's and 2 D's. I hope to do better in my second semster. I always been a B student. I dont know what my GPA is but before this semseter it was 3.07 unweighted and weighted was about 5.2. Also my 2 D's are in AP cl and 1 of my C is an honor cl. if that make a differents. Will Purdue rescinded their admission? What should I do? Please answer I am nervous.