Cramping

Sharon

I am 2 weeks postpartum after vaginal delivery of my first child and I’ve started having really bad abdominal cramping that comes and goes, sometimes also accompanied by a sharp pain to my left side. Has anyone else experienced this? I also noticed a lump just above my belly button, if I push down I can actually move something, is that normal? I read it could possibly be a umbilical hernia? Could that be the cause of the pain?