As referenced in the post this came from it is not a strict 28 day cycle that starts at exactly 12:01 AM on the day of.

There are many factors that can cause a woman to be early or late and stress is a major factor, so is potential medication, medical conditions etc, etc.

As is sometimes forgotten on these boards the providers we see ARE in fact real human beings and they have all the usual stress that an average woman has.

That being said the providers we see ARE real human beings and sometimes they are in a crunch financially (we won't delve into the decision priority making behind it) and are behind on rent, need extra money for a trip (like seeing ailing family) or any number of situations and don't/can't take time off for their cycle.

Convey it ahead of time as best you can and give the customer the option is the best scenario I believe.

Personally it's not an issue for me.

I've had long term relationships where it would occur and the lady in question would prefer we didn't fuck and would give an oral session instead but at that point we are friends and I am obviously going to see her again so we can make the sweet sweet love next time.

I've had similar relationships where they know it doesn't bother me (it's not a turn on either) and we would proceed as usual although a shower is most likely needed afterwards.

A first time with a new provider or a one off where it is a visiting provider who I haven't seen before?  Let me know and we can reschedule, want until the next visit, or decide it doesn't matter.