Berkana is the letter B

Anglo-Saxon Rune Poem (from ragweedforge.com)

The birch bears no fruit; yet without seed it brings forth suckers,
for it is generated from its leaves.Splendid are its branches and gloriously adornedits lofty crown which reaches to the skies

Berkana reversed indicates that there is a lack of nurturing, of growth, and gentle sustenance within the day. Perhaps some harsh internal criticism is being applied, or the environment that is moved through today is being particularly rough, with very little gentleness or kindness involved. As Berkana is the rune of the feminine, it might indicate a lack of female presence or influence. For women in particular, it might be indicating that there are problems had within, and a need to find feminine strength and power, but also to look at the well being of breasts, womb, ovaries and vagina.