I have just come off norethisterone, which was supposed to delay my period. Unfortunately it instead resulted in continuous and heavy spotting, but I did not put in a pad or consider myself niddah.

Approximately 3 days after finishing the cycle of pills, as expected, the bleeding became heavier, and I became niddah. I believe I saw on the leaflet I was given when it was prescribed that the bleeding following the pills is not actually a period, but is a kind of withdrawal bleeding. In fact, I have had a clear bedikah today on day 4, and I am usually never clear on day four. Given that it is not a real period, do I have to wait five days, or can I count four and then begin the sheva nekiim? (We are Ashkenazi.)