My OB Performed D & C Last Feb 1, 2014.

My OB performed D & C last Feb 1, 2014. after a month, my monthly period arrived. But the succeeding months of April & May my period stopped. so my OB gave me DB 10 to balance my hormones, she said. so i took the 10 tablets for 3 months. May, June & July. My period arrived as i took the tablet. i stopped after 3 months since she said the minimum requirements to take the DB 10 is 3 months. My last period was last august 2014. I didnt take DB 10 anymore nor visit my OB. Last Dec 4 i had a slight spotting until Dec 8 and in Dec 9 it really had a regular flow as in heavy up to the present. Last Sunday i went to my OB to have a check up and she advised me to have a transvaginal ultra sound. i am 51 years old last Nov 2104.