Hello and welcome to the forum. Thank you for the question and sorry for the delay in response. During a biopsy, these things can happen. Our body is a complex network of nerve endings and situations like this occur. Most of the time, it will sort itself out and you will get feeling again and regular nipple responses. The time frame would be different from person to person and there is the rare person that it does not resolve. Is it better yet? I think a call to your surgeon that performed the biopsy would be a great idea as well to get their input but would expect it to resolve. Let us know how you are doing. Glad the test was not positive for cancer.