Having trouble pooping

Marisol • Wife💍💑 mommy to two beautiful angels👼🏼👼🏼 rainbow baby due August 2018🌈

My sweet girl will be a month in Saturday and she’s been having trouble pooping, I feel so bad cause she’s she’s pushing like she’s pooping but when I go and change her there is no poop in there. I need help y’all I’m feeling hopeless I took her to the doctor yesterday but she didn’t really tell me anything about her pooping😞