Becky, yes clip your toe nails short, especially your large toe and the next one. Next ensure that your boots are a good 1" longer than your foot with your pack on. Your feet tend to flatten out under weight. Your feet slip forward on down hills causing your toes to bump against the toe of your boot. Tightening the laces may help some. Probably a good form fitting insole would help some too. “Good Luck:”
Tom Bourlier