Last week I received six steriod injections to my lower back, to assist with back and leg pain, my left leg was extremely painful prior to the procedure, now post injections, my other leg is the one with pain.  Is this normal?  Also my period is different, it's a slow trickle of dark blood, going thru the motions of a regular perios but it's been over a week.  Is this kind of menstrual spotting normal?