Dark line down middle of my stomach

Breanna β€’ πŸ‘§πŸ»πŸ‘ΌπŸ»πŸ‘ΌπŸ»πŸ‘ΌπŸ»πŸŒˆπŸ‘ΌπŸ»πŸ‘ΌπŸ»πŸ‘ΌπŸ»πŸ‘ΌπŸ»πŸ‘ΌπŸ»

Did anyone else get the dark line down the middle of their stomach while pregnant? I am 6 weeks postpartum and still have it. Will it go away? If so about how long?