Abstract: The present invention relates to an intravaginal catamenial device having a distensible member for sealingly engaging walls of a vagina. Inflating the distensible member provides immediate expansion after insertion into the vagina, thereby minimizing the potential for any by-pass leakage of bodily fluids. The device of the present invention employs a valve mechanism capable of two-way fluid communication that enables both inflation and deflation of the device. The distensible member may be of any shape that is useful for blocking and/or collecting bodily fluids.