This is one of the most important and commonly asked questions for women performing হজ্জ. When Aisha (may Allah be pleased with her) began menstruating during her উমরাহ journey, নবী করীম (সাল্লাল্লাহু আলাইহি ওয়া সাল্লাম) told her: 'Do everything that the হাজী does, except do not perform তাওয়াফ around the House until you are pure.' Based on this, the majority of scholars hold that তাওয়াফ requires ritual purity and a menstruating woman must wait until her period ends to perform তাওয়াফ.
The Hanafi school provides an exception for the ওয়াজিব তাওয়াফ al-Ifadah: if a woman's travel group is departing and she cannot delay, she may perform তাওয়াফ al-Ifadah while menstruating, but must sacrifice a camel (badanah) as a penalty. Some contemporary scholars, including Shaykh Ibn Taymiyyah, held that if a woman has no choice (her group is leaving, she cannot stay), she may perform তাওয়াফ after securing protection against discharge and her তাওয়াফ is valid without penalty — though this is a minority opinion.
Importantly, a menstruating woman remains in ইহরাম and can perform all other হজ্জ rituals normally: standing at আরাফাত, staying at মুযদালিফা, stoning at জামারাত, সাঈ (according to some scholars), and making dua everywhere. She is exempted from the farewell তাওয়াফ (তাওয়াফ al-Wada) entirely — this is agreed upon by all scholars. Modern medical options such as medication to delay menstruation should be discussed with a doctor well before the trip.