Short answer

• During periods: avoid murti‑puja, abhishek, entering garbha‑grah, touching idols or scriptures. Do quiet bhakti at home (jaap, prarthana, swadhyaya, listening to pravachan).
• After periods stop: take a full bath, wear fresh washed clothes, and then resume pooja.

Tradition-wise guidance

• Shvetāmbara (commonly followed): refrain for 3 days; resume on the 4th day after snān, provided bleeding has fully stopped.
• Digambara (commonly followed): refrain for 4 days; resume on the 5th day after snān, provided bleeding has fully stopped.

If bleeding continues beyond these days, wait until it fully ends and then do pooja after a cleansing bath. These are achār (customary conduct) for ritual shuddhi; they do not reduce your spiritual worth. Inner sādhanā is always allowed.

For simple temple/pooja conduct and period-related practices, see: