Hi Trishy,
I was keen on doing a back to back however my fs wanted a day 2 scan before starting stims, I had a few corpus luteums left over from the previous cycle and funny E2 levels so I did not proceed. Hopefully someone will respond who has actually proceeded. From what I remember in general those that have have had a slower or lesser response ie less follies or slower growing follies. Which ever way you go, wishing you all the best xx