If I need to check whether it has ended or what colour my discharge is, I usually check around ‘Asr because that’s when discharge naturally comes out for me. Even after day 10, I’m otherwise dry for 12+ hours, but at ‘Asr I may see a tiny amount of faint yellow discharge, Should I do ghusl?

Ustadh AbdulAziz al-Haqqan
Once you have seen purity, either dryness or the white discharge, what comes after it of yellow or turbid is nothing, you only make wudu for it and pray.