Has anyone else used this successfully? I would really like to know what anyone else had experienced, and how long after your dose(s) did AF return?

I have had 2 doses (1st dose on 23rd Sept, 2nd dose on 25th Sept) and still have 1.5 cm of retained product left in my uterus. I am contemplating whether to have d&c or not. I have to go back on 16th Oct for them to do another check. The doctor did say I was borderline, but I am getting annoyed by the constant bleeding - I'm on day 11 now.
I just think that the statistics of things that could go wrong with a d&c are worrying me, but I don't want to get an infection either due to retained products.

Hope someone can help.