hii. i went through your question and from what i understand you have a uterine polyp or endometrial polyp. it is a mass protruding from the inner layer of uterus( endometrium). polyps are usually benign. One of the most common symptoms patients complain about is bleeding or spotting in between the periods. if the mass is big enough it exerts pressure on you bladder causing your other symptoms of frequent urination and blood in urine. polyps can be managed with medications bt they tend to re-occur. they can be surgically removed using curetagge under hysteroscopy (a tube inseted through vagina) i would suggest you to discus it with your treating doctor who can explain you the entire procedure. hope this answered your queries. have a good health.