Short answer: Yes.

In Jain Dharma, pratikraman is primarily an inner act of repentance, reflection, and resolve. Menstruation is a natural, bodily process and does not stop one from doing bhav‑pratikraman.

How to observe during periods (simple, respectful way):

• Focus on internal purity: do samayik, alochana (confession), pratyakhyan (resolve), pratikraman sutras, and kayotsarg mentally and peacefully.
• Keep it clean and simple: sit in a clean place at home, wear clean clothes. If full bath is difficult, basic cleanliness is acceptable.
• Avoid temple-touch rituals: as per traditional maryada, avoid entering the garbhagriha, touching idols, scriptures, puja-dravya, abhishek, or ang‑puja. If attending a group pratikraman, sit outside the sanctum and do bhav‑pratikraman.
• Health comes first: strict fasts (like upvas) are usually relaxed for women during menstruation; prefer light niyams such as anukampa-bhav, maitri, and gentle swadhyaya.

Tradition notes:

• Shwetambar: Generally permits samayik, swadhyaya, stavan, and pratikraman as bhav‑sadhana at home; avoid murti‑sparsh and puja‑dravya.
• Digambar: Similar emphasis on inner sadhana; avoid idol-touch and abhishek. Jain women may continue japa, dhyana, and pratikraman mentally.

(Local sangh maryada may vary; follow your guru/aatma‑prerak guidance.)

Essence: Pratikraman is about inner purity, not physical condition. Do it with shraddha, ahimsa-bhav, and sincere repentance, keeping external restrictions where your tradition prescribes.