Every cycle I have large light-red clots looks like tough tissue&many dark bld clots, irregular menstruation (late)+pain in colon, bladder&pelvis (flow)?

Heavy periods. There are multiple options for heavy periods. Hormonal treatments such as birth control pills, Progesterone treatments and the Mirena (levonorgestrel) iud are effective reversible treatments that will help many people. There is also a drug called Lysteda that contains no hormones which will help others.

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Every cycle I have large clots looks like tough tissue&many dark bld clots, irregular menstruation /late+pain in colon, bladder & pelvis during flow?

Heavy clotty menses. Normal menstrual periods do not contain large clots. Clotting is a function of rapid arteriole and not venous blood loss consistent with hemorrhage. You need to contact and see a GYN MD ASAP to avoid anemia and determine the cause of the hemorrhage. Read more...