possible oc?

hi a little history about me. I had stage 0 bc in 95', this year had microscopic blood in my urine i pushed for more testing they found a forond had surgery to remove 6/09 ended up being a papilloma (not cancer)but before surgery had a ct scan with out contrast and they said was most likely a cyst based on my age 39 but they didnt knw i had bc so i pushed for a ultrasound. Now I had a internal us back in 07 nothing showed now fast forward ct shwd a cyst in early june just had new us this past friday which showed a normal size ovary with a small 3cm slightly complicated cyst with a few internal echoes in it.The only other thing they found was a small amount of fluid in the cervix every thing else was normal. They recommended a 6 week follow up as a neoplasm cannot be completely excluded. Sorry so long. I have a few questions 1-if it was just a cyst wont it go away after period but if it was bad wnt it have more stuff within it> 2-can a biosys be done without major surgery (like a breast biosy)3- has anyone else have something similiar? For the past 2 yrs I have had systoms like constipation and i eat a little and get bloated right away and back hip pain had barium tests nothing show and us only show small cyst and fluid so doult that is the problem.