question: Hi..my mother underwent a lung biopsy two days back.I had opened up the wound yesterday and applied undiluted savlon only on around the wound area and not on the wound.Today I found water filled small blisters. I tried to burst few blisters and water came out. So I got scared and put some calo soft lotion on the surrounding area.. And covered it with dry gauze. I hope its not serious.Please help..