You were operated for Chocolate cyst
of Right ovary.They are blood filled cysts in the ovary.
What was the duration of the period before surgery?
The symptoms which can be attributed to Chocolate cyst like Painful bleeding,Abnormal bleeding,Abdominal cramping etc will get reduced gradually as you were operated on jan 10,2013 only.
Please continue with the Pill and observe for another 2-3 months.
Hope everything will be alright.
Wish you good health and speedy recovery