To create a period pack, first select a nice cosmetic bag or pen case that is discreet and fits everything you need. When you have your bag, fill it with all the sanitary products you need for at least one day of your period. For example, you can include three or four pillows, tampons and tights. For heavy flow days, you also want to include personal wet wipes and underwear replacement for leaks. Don't forget to bring some painkillers for cramps. To learn what to do if you run out of pillows or tampons, read on!