After the Biology period was over, I saw Cammie and Alyssa walking up the corridor. I tried to wave at them, but I felt too exhausted, they might have sensed something wrong with me, because both of my best friends hurried to my side.

"Viv, are you okay?" Cammie came to hold my hand. "You look pale."

"Yeah, I'm fine," I said and pulled away. "I just—­" and before I could say anything else, my knees buckled. I would have fallen on the floor if Cammie hadn't caught me.

"Oh no, I don't think so."

"Let's take her to our room," Alyssa suggested, and they grabbed me away before I...