Pink discharge after a five-day menstrual period

Q 4: My period usually lasts for five days only. However, I see some pink discharges after the period is over. Is it permissible for me to perform after-menstruation Ghusl (full ritual bath) and offer Salah (Prayer) while I have these discharges that last several days? Is my Salah valid? (Part No. 4; Page No. 205

A: You should not perform after-menstruation Ghusl until the blood stops completely and you see the sign of Tuhr (purity from menses signaled by white discharge or complete cessation of bleeding).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.