Looking for those with experience....

Had my 4th iui. All 3 prior iuis were insanely painful, so I prescribed Cytotec/misoprostol for dialation. I placed it vaginally 3 hours before my 4th iui. It later led to bleeding much like AF. It was abnormal and required an immediate visit to my RE who then prescribed 400mg of progesterone.

Has anyone dealt with cytotec/misoprostol for iui/ivf? 

The only info I can find online pertains to abortions and labor. I am in my tww and am afraid that my 4th iui was trashed by the use of this medication.