Hello Doc Hope U Can Help Me Out. Had A

Hello doc hope u can help me out. Had a normal period which ended, then started soon after spotting i was taken NORCOLUT for the last 2 weekes i should have been taken them twice a day, but was only taken two a day. The doses was rectified and now i'm on this one called NORETHISTERONE twice a day i have been using it for the last 10 days and i'm still spotting,the blood is not that much but it has me fustrated .(NORCOLUT is currently out of stock)