delays in IVF

[monx77]

i'm extremely frustrated as i was supposed to have a hysteroscopy today but it was postponed due to too much estrogen on my day 3 on 6/29. i was given ovidrel to stimulate ovulation and am now waiting for AF to show so i can go on birth control. now i am scheduled for july 24th but i am freaking out that the timing isnt going to be right again as i get mixed answers from nurses. has anyone ever gone through this? i have no control over it and it is extremely frustrating.