Hi, I've noticed infrequent clot like substance at the bottom of the toilet water after urination. It's a few small pieces, brownish color, doesn't look obviously red to me. Its happened 3 times over the past ,month or less. I just had a physical include Papp smear, results came back normal. I have low progesterone according to recent blood test confirming I am post menopausal. I have endometriosis and have had two laproscopy surgeries many years back. What would the clot like substance suggest?