TMI sex question

Ok so my fiancé and I were having sex last night and he’s been begging to go down on me for a while now ( I gained weight and developed poor self esteem and him doing that just made me feel to “exposed” so we haven’t done that in awhile) I finally caved. All was good and everything was feeling amazing ( I forgot just how much I enjoy it)

well he starts to finger me also, all was still good. Well after a little bit of time I felt an orgasm building but I also had just so many intense feelings going an he must of picked up on it and just started going a little more forceful and faster and it got to a point I had to tell him to stop because it started to get uncomfortable.

When I told him to stop I naturally grabbed his wrist and I must of pushed his hand a little and when I did that I was surprised with a pain I can’t really describe. Normally he can just slide his fingers right back out but this time it was like he found a hidden chamber and got locked in. My description is probably confusing but he had to like twist his wrist and shit and pull out real slow. The pain of trying to pushing on his wrist was so painful .

Iv personally never experienced that before it was like the inside of my vagina swelled up and wanted to keep his fingers hostage.

Has anyone ever experienced something like that? Or is my vagina creating secret passage ways with booby traps