This is not for the squeamish.
I highly recommend including two
menstrual cups in your bug out bag. I do recommend them in general, but they are the only way to be sure you can survive without female supplies. A silicone cup can be boiled once a day.
I've tried 3 of them, I prefer the silicone ones.
Pine Tar soap is very effective at keeping the feminine regions and major body creases free of fungal infections. It also makes quite a good shampoo. A little citric acid powder mixed with water makes a good rinse.
My favorite is Grandpa's Pine Tar Soap.
My mom was in the Army, her camping equipment always included Pine Tar Soap (She preferred packer's Pine Tar Soap).