Hi,
I have recently had a blister around my anus that I thought was hemorrhoids. When the blister burst, yellow puss was released along with blood. It was about the size of a dime and was very painful. It has healed somewhat, but is still tender and painful at times. Is it possible that this can be herpes? I haven't had sexual contact with anyone in a year and have gone in recently for a HSV 1 blood test, which came out negative. Is it possible that this can be herpes?