Hi. My Period Started Jan 25 And I Had Intercourse

Hi. My period started jan 25 and I had intercourse on the 4th day of my period and took nordette as instructed on the same day. The second dose was taken on the next day. I was still menstruating on the day of intercourse and until now, I am still bleeding. My period started Jan 25 so today is the 9th day of bleeding. Could this extended bleeding be the withdrawal bleeding caused by ecp?