Severe abdominal pain where previous c section is

Hanah
I went to labor and delivery for an extremely painful sharp pain where my c section scar is. It lasted 2 days and comes and goes. I cried this morning the pain was so bad however labor and delivery just said we aren't sure why you're having pain and discharged me. I'm disappointed cuz I bet the nurses thought I was over exaggerating. I just want to know why I'm having this pain.