Chicken pox. Pain, itching and burning!

Hello now iAM suffering from chicken pox even I got vaccine at my child hood. Today 3 rd day after rash appears. Before knowing it us a chicken pox I spent  very closely with my husband. He had chicken pox at his childhood. He is chemist. While doing one product his right hand got swollen as a side effect without any pain. I asked him to consult the doctor. He said not to worry it will go on its own. Many times happey like this while doing that product to everyone he said to me. Today swollen is reduced. But u observed  3 water bumps on the swollen area. Initially they are big but now becoming small and like puss bumps. What are those. He did not get any fever. Chicken pox or swollen hand effect. He is not getting any pain, itching and burning