My boyfriend and I recently got into bdsm, and it's been awesome. Sex before used to hurt like hell for me, so these past weeks have been like heaven. But now it's starting to hurt again, so much that I start to cry and have to call it off. I am a sub, btw, and humiliation turns me on very much, but now all I can think of is how much it's going to hurt(in a bad way) and how much I don't want it to. Does anyone have any idea why this happens and how to get rid of it? Any thoughts at all on the subject would be greatly appreciated.