I purchased the large size disc and it did leak and did not stay in place. I didn’t know that I needed to get the small size disc because it’s not a “one size fits all”. Each woman’s body is different and we have different size pelvis so this large disc was too big for me. I did not have any problems with inserting or removing the disc and followed the instructions. I have ordered the small disc and can’t wait to try it with my next cycle and look forward to giving you all another review.