1. A method for characterizing elasticity of a vaginal tissue, said method comprising the steps of: (a) deforming said vaginal tissue by a transvaginal probe equipped with a pressure sensor array and a motion tracking sensor; (b) obtaining stress and strain data for at least two measurement points using said transvaginal probe, said stress and strain data resulting from deformation applied to said vaginal tissue; and (c) calculating stress gradients for said two measurement points using said stress and strain data to characterize elasticity of said vaginal tissue.