Hi,
Sorry to hear that you had a bad experience with your biopsy,unfortunately this happens sometimes when the needle hits a nerve
or an artery as it happened to you..Many factors will effect the individual experience such as type of biopsy, location, bruising, degree of swelling etc.
Bruising/hematoma after a biopsy is scary, but it's not that unusual, and can extend even beyond the area of the biopsy site.The bruising will eventually fade within a few weeks.