My boobs are 4 days after surgery and they don't feel painful, just a tad sore around incisions and itchy from healing, but even if not painful the worry is clients grabbing and causing injuries. Plus it take a month or so for the breasts to 'settle' into shape and I'd imagine sex might disrupt that. And with the nose job I probably won't be able to do doggy for a while. I've been thinking of moving over to straight fetish services for a while so now feels like a good time because I can much more easily control the session, where hands go etc and I can keep my dress on more easily etc
Yes of course there are differences, but its good to know the broad spectrum of possibilities... from there I use the 'plan for the worst and hope for the best' school of preparation.