Sounds more like"Vaginismus" than Vaginitis ....or at least it worth looking into cause Vaginismus is a sexua| disorder that is characterized by the outer third of the vaginal muscles tightening, often painfully. A woman with vaginismus does not willfully or intentionally contract her vaginal muscles. However, when the vagina is going to be penetrated, the muscles tighten spontaneously due to psychological or other reasons.