Is my circumambulation valid despite the possibility of spotting (Kudrah) discharge occurring during it, after performing ablution and taking precautions?

A woman experiencing Istihadah (non-menstrual vaginal bleeding) is considered ritually pure, and it is permissible for her to perform Tawaf. What the questioner does by using a cloth to protect herself after purification is correct. Her Tawaf is valid, and she is not harmed by any subsequent discharge of brownish or yellowish fluid (kudrah), whether she ascertains its emission before or after Tawaf. If there is doubt about the time of the kudrah's emission, it is attributed to after the Tawaf, because an impurity (hadath) is assigned to the nearest possible time of its occurrence.