Hello everyone, I've been having pain below the abdomen similar to the…

Hello everyone, I've been having pain below the abdomen similar to the start of a period for the past three days, along with heavy, odorless, mucous discharges. The pain is worse today. My periods have not resumed since giving birth. With my first child, my periods resumed four months after childbirth. Has anyone else experienced this? It feels like they just can't start. I took a test just in case when my uterus started hurting, and it was negative.