randomly passed maybe 3 mm fairly hard oval shaped mass with blood clot from vagina - squashed between toilet paper and the other 1cm clot almost disintegrated and when I threw tissue in toilet bowl the blood dissolved in the water as u would expect but the little teeny mass just sort of sank to the bottom. I had a d and c 4 weeks ago and have t had a real period yet and also do have thrush caused by large doses of antibiotics after the operation.. is this something i should be concerned about?