Chele
the day of egg pickup is always classed as day of ovulation -doesn't matter how long it took to get there or and if they were day 2 embies and frozen they put back at same - as this is when uterus is in right condition for the embie -hence monitoring oestrogen - and sometimes they measure endometrium lining too to be doubly sure.

It took me ages to get abbreviations -there is a thread for them explaining