Can I enter the temple when my period is coming?

Yes, no problem, and the more emotional I was during that time, the more I needed to worship Buddha. As long as you pay attention, take the regimen with you, and don't take it in the hall.

It is considered unlucky for women to menstruate, which is the discrimination against women in feudal period and the fear of blood in primitive society. There is no scientific basis. In Buddhism, all beings are equal and compassionate. Why not let them go?