Kindly refer to the following link(s):
Menstruation: Irregular Period/Menses By Assim Al Hakeem
13 days menses and Spotting | Sheikh Assim Al Hakeem
Irregular Periods, Menses exceeding 15 days & determining purity
What is Istihadah, Continous bleeding that is not her period, Ghusl on 14th day (2 periods in a month)
Minimal Period Between Two Menstruations
Spotting and Discharge
After menses saw brown discharge, must I make ghusl again? (spotting before & after)
Spotting before and after periods or menses
Seeing blood or spotting after the menses / period ends
Brown discharge after period & I don't see signs of purity, when should I start praying?
Woman sees purity (white discharge) along with brown, yellow discharge, is she pure?
Does off white / light yellow discharge affect my wudu?
If a girl doesn't see purity after menses, how long should she wait to perform ghusl
Determine End of Period
If the period stops and she doesn’t see any colored discharges, she must immediately insert a tampon and perform ghusul if she sees it coming out clean and clear.
Wipe or Insert to Determine End of Period/Menses? | Sheikh Assim Al Hakeem
Period is inconsistent, sometimes 4,5 or 6 days If it stops on day 4 for 12 hours, must I make ghusl?