Originally Posted by
atomic sagebrush
Well, if you can only BD tomorrow (today now) you can only BD tomorrow, and hope that O comes early because 4-5 days out is going to be very slim chances.
So yeah this woud be your one attempt. But I'd consider another attempt if you get to 4-5 days and then get a positive OPK at that time because that would be very slim chances of conception.
I am confused what you mean about "what if I have an opposite?" An opposite is always a possibility, even with the best of sways. Are you asking if I think having an attempt with Shettles timing will CAUSE an opposite? Timing doesn't sway.