Hello everyone! I apologize in advance for the photo, it happened to m…

Hello everyone! I apologize in advance for the photo, it happened to me today after each feeding my daughter has brown and green stool that is watery and today I discovered pink mucus, Could this be blood? I'm worried. But only once during the whole day like this. Could black plum puree be the cause? She ate it before. The baby is calm, two days ago she had a temperature without coughing or runny nose, it passed already, but now the stool is like this.