The other day me and my girlfriend were fulling around, and as usual she got wet. her wetness seemed just regular, nothing out of the ordinary. until we started to have sex. it seemed like the friction of my penis in her vagina was turning her vaginal secretions inton a soapy lather. it was very odd and unpleasant. there wasn't nearly enough lubrication and the sex became sort of painful. has anyone else experienced this, what could this be.