I am two months pp and breastfeed on demand. I recently started pumping occasionally to prepare to go back to work however. I have been having some mild cramping and dull back pain but assumed it was from things I ate and lifting baby all the time. I have had some white discharge also - just as what youd see in normal vaginal discharge. My question is: tonight I had a gooey dark brown discharge .. Is this possibly a start to my period or simply more discharge from child birth?