Clear cell cancer

 I was spotting blood. I had a biopsy of the uterus and it came back clear cell. I had a complete hysterectomy, robotic, and a pelvic washing.  my results came back no cancer anywhere. They are calling it cancer free.  Is this possible?  I was originally told I would have to have chemo no matter how good the results were which I didn't want since Ihad chemo for breast cancer 4years ago.  Could the slides have gotten mixed up?  Has this happened to anyone else?