Brazilian Wax

Hello ladies! I have scheduled an appointment for a Brazilian wax on Monday at 12, this is my first "down there" wax. I asked the place I am going if there is anything I need to do beforehand and they said no, however I am wondering if it would be okay to masturbate or have sex before the appointment? I know that I am advised to not have sex for 48 hours afterwards but nobody has said anything about before. I have the Skyla IUD so I'm not certain when/if I will begin to bleed. Do I have to reschedule the appointment if I begin to bleed before? Any advise is appreciated!