Owing to natural closure of Os or to artificial closure as a result of local ulceration, as well as to endometris, air, blood or water may accumulate inside it.
If it is air it is called Physometra, it could escape with the production of unpleasant sound.
When there is accumulation of blood it is called Haematometra and on accumulation of water it is called Hydrometra.
Homeopathic medicines like Belladonna or Lycopodium could give relief in condition of Physometra and Calcarea carb or Carbo veg could give relief in condition of Haematometra or Hydrometra. However, under guidance of your Homeopath followed with investigations and with constitutional medicine, the results can be astonishing.