Be happy they took a good slice. Small samples tend to give false results, and if you are going through this pain, you want it to be accurate. Yes, the biopsy site does take awhile to heal, but usually handled with OTC painkillers.
You have now entered waiting hell. We all know it, and have lived it - and we wish there was some way to make it an easy process. Keeping busy is one of the best ways to deal with it, and another I like is to allow yourself a period of time for concentrated worry, and after that if your mind wanders - be disciplined and wait until the next dedicated worry session. Worrying truly is a non-productive activity, but oh so human.
For now, Hugs.
Donna