Can ovarian cyst cause bleeding with tissue pieces from vagina for 3days? then daily dull pain right side abdom, 4week bloating, late period not pregnant

Possible: Pregnancy is always on the list of possibilities when a woman has abnormal uterine bleeding or cycles. You may be having anovulatory cycles (cycle without producing an egg from the ovary). If a urine pregnancy test is negative, i would recommend evaluation by your gynecologist, and treatment will depend on the cause of the abnormal bleeding and your current short-term pregnancy goals.