There have been a few answers I could have given but I think the worst scene was the one that I ended up safe wording out of.  It wasn’t a bad scene it was just something that I thought I was ready for and it turned out I wasn’t and it really panicked me.

I was with Miss Stella who I have done plenty of scenes with since and it certainly is not a reflection on her as a domme but we were doing some wax play.  She had tied my arms to the headboard and then dotted some wax across my stomach and then she put some wax into my tummy button before adding a lit candle there.  She began to edge me with a hitachi but all I could see was the candle and it sent me into a panic. Instead of telling her how I felt I let myself get more and more agitated until I finally used my safe word.