I Had Take Unwanted 72 On 6 April Withdrawal Bleeding

I Had Take Unwanted 72 on 6 april withdrawal bleeding started on 14 april until today its still bleeding since 14 th of april.
I usually expect my date to be around 20
I don't know whats going on! The bleeding is not painful or heavy its kind of withdrawal bleeding but how can it be remain for so long its been more than 10 days since I had the withdrawal bleeding! How can it continues till now? Please help me out