In the Name of Allah, the All-Merciful, the Mercy-Giving

  

All praise is due to Allah. Peace and blessings be upon His Messenger Muhammad.

 

There is nothing to be shameful about saying that you are not eligible to pray; if you need to explain why you should say you are in your periods and as such you cannot pray. The Prophet said, “Menstruation is something that Allah has decreed for the daughters of Adam”; as such there is nothing to be ashamed of it.”

 

Almighty Allah knows best.