Chicken pox...Exam in 2 days....help!?

So i woke up this morning with some itchy red blisters all over my body,so i went to the doctors and they said it was chicken pox,they also said i should not leave the house for the next 7-10 days!Now the problem is i've got a gcse maths exam in 2 days!!!wat should i do?I'm 18 and go to derby college