It's possible.

But I've never had that much notice for EPU. The longest notice I've had is "take no puregon tonight, just lucrin, you'll trigger tomorrow night" and then EPU is approximately 36 hours after that. If it's another day off for transfer - that will pretty much depend on how long the embryos are grown for. The longest it would be is day 5, possibly day 6.

I tried to give my employer notice of what was happening when (I was very open about undergoing IVF), and in the end I just had to say sorry, I don't react normally, nothing in this is predictable, I'll let you know when I do. Also, the shortest time I've had off work after EPU was two weeks, but I have pretty nasty reactions as I produce so many eggs.