Hello. As my boyfriend is currently suffering from chicken pox I want to know whether I am at risk or not. I was there with him the night before he got rashes. And it says that it is contagious from one of two days before the rashes appear .I have had chicken pox already before when I was small. So kindly let me know whether I am at risk or not. Also is there any preventive measure for it. Something like a medicine to prevent the virus from infecting me and can I have it now if any?