hi, I have a large lump, just inside my virgina, size and shape of an egg. It comes up, I have noticed during a period, or just after, I also have thrush, my periods are heavy, but only three to four days long, I have P.C.O.S so I don t get periods very often, I do get much pain, anxiety , sickness, and tiredness though... but I have M.E , my gyn thought it might be Endometriosis ...?