Hi Chloe,
I would imagine that everyone will have slightly different requirements in that some seem to need longer to recover than others. Have you booked your time as holiday? You are entitled to sick leave although for elective surgery you might not be paid for you period of absence.
I think it would be no harm at all to book two weeks off. It is expensive surgery and you want to give yourself a fair chance to get back to pre-op form.
Hope that help So? Good luck x