8.5 months solid poop and black

Kelly • First baby on the way after 4 yrs of trying 😍

Dd is eating purees mostly prunes peaches broccoli for the past 6 days as her poop is solid and not much sometimes like a size of a grape and sometimes a bit bigger. She's pushing and i feel she's having a hard time sometimes. Also the last 3 days color is black. Is it normal? They said it is what she ate but then could be coz of blood too.