It is normal to have bleeding  on and off for 3-4 weeks after using the abortion pills. Your period may be irregular for the first month or two afterward due to the procedure.
 Gynuity. Providing medical abortion in low-resource settings An Introductory Guidebook. Second Edition. 2009. Retrieved from: https://gynuity.org/assets/resources/clinguide_maguide2nd_edition_en.pdf