wantobeamum - I usually O on cd 12 or 13 as well but last cycle looks like I did cd15, but it was my first proper cycle trying after miscarriage so I dont know if it was that or the soy that delayed me. However all I have read says O is usually 8-10 days after last dose of soy or clomid so that would be about right. I did cd4-8 but this cycle I am doing 3-7 120mg 3,4,5 and 180mg 6 and 7. all in the hope of producing a higher quality egg, 2-6 you run the risk of more eggs but less mature. I am still reading and studying all of this so I am sure someone will correct me if wrong.
Good luck sweetheart