I recently gave birth to a baby girl, weighing 7lbs, 14oz. During the last few months of pregnancy, my belly button started to poke out and now, almost 3 weeks after the birth, my belly button is sore to the touch with a slight lump above it. Could it be possible I may have given myself a hernia during pregnancy or after the birth? If yes, what an I do to fix the problem, or relieve some of the discomfort?