Hi, Been spotting for 10 days, then off for 2 days and came back with prolonged menstruation at 13 days now. TVS says Normal sized anteverted uterus with smooth contour and homogenous echopattern. Endometrium is hyperehoic and smooth measuring 18.2mm. Subendometrial halo is intact. Anterior and posterium myometrium measures 1.6cm an 1.6cm respectively. No focal lesion seen. A thin-walled unilocular anechoic cyst is seen in the right ovary measuring 2.4 x 2.5 x 2.6 cm. No adnexal mass noted. no free fluid in the cul de sac. Also there are few nabothian cysts seen on the cervix. Cervix is long and closed with smooth walls. What could be the possible reason of my prolonged period? Thank you.