Good luck tomorrow. It's late now in the UK so hopefully you get good rest. There is nothing positive that comes from worry at this point. Lack of sleep and anxiety surely are not good.

Depending on the type of biopsy, you should be able to get about your normal business in a day or two. If you must talk alot as part of your job, then there may be a few days of speech issues and some pain. Make sure you get some pain meds straight away. You can always withhold them if you feel ok.