Disclaimer: this post contains frank discussion of feminine hygiene, menstruation and blood products. If you are squeamish about this topic, please scroll on, this is not the post for you. I am thrilled to have my friend, Erin Beauchamp as the guest blogger today. She will be discussing the construction and use of period panties as a feminine hygiene option. If you aren’t familiar, period panties have an absorbent lining built into the underwear designed intended to trap blood products…