In the absence of medical assistance
Here are some links. It would be very wise to download these and have them available. Reading on nutritional needs before hand as part of your preps and buying vitamins is far easier than trying to deal with the long road to recovery on a limited diet. A stitch in time, saves nine.
[link to www.thirdplanetfood.com
There are too many potential interactions with wild edibles, though many have benefits to stave off deficiencies, but since women make up half of survivors, and many might be of child-bearing years, caution must be used. I'd like to give you some advice, but it's ill advised. You should do your own research as there are many wild edible pages, but conflicting information on some of them. Many common edibles while providing scant calories, they can provide whopping doses of vitamins. However because there are many phytochemicals (perhaps thousands) in a plant, you must read read read.
Stressed out people cope by making love more or less depending on the person. So unexpected pregnancies can easily occur. Remember that if the SHTF, you might easily run out of normal contraceptives, and obviously the rhythm method doesn't work unless you carefully do the mucus and the temperature test religiously.
All of the Hesperian docs are free and in several languages. There are three main ones for no dentist, no doctor, and specificly for women. All good.
[link to hesperian.org