Bismil Laahir Rahmaa-nir Raheem.
In the Name of Allah, the Compassionate, the Merciful,
Here are some easy duaas from the Quraan that can be read even while menstruating...
Rabbanaa aatinaa fi ad-dunya hasanatan wa fi al-aakhirati hasanatan wa qinaa adhaaba an-naar
(Our Lord, grant us good in this world and good in the next world and save us from the torments of the Hellfire).
Rabbanaa taqabbal minnaa innaka anta as-samee`u al-`aleem wa tub `alaynaa innaka anta at-tawwaab ar-raheem
(Our Lord, accept this work of ours, for verily You are All-Hearing, All-Knowing; and grant us repentance, for You are the Relenting, the Merciful).
More to follow Inshallah.