Menstruating women: are you embarassed if someone sees your feminine supplies?

A coworker and I walked into the bathroom at the same time and she dropped her tampon. She was so embarassed that she turned red. I giggled and told her that’s in no big deal. Afterall, it’s a women’s bathroom.

Then I started thinking, why be embarassed at all? About 50% of the population menstruates and the other 40% or so are with women who menstruate. Why the shyness about it?

What do you think?