Bengi has been pooping stools with some white on them

. It's been a couple of days already. Sometimes he first poops brown, but then he goes a little bit more, like a thin, softer stool with some white on it. Also he's being doing the "extra" poop outside the pad, like he needed to go after he's done his job in the pad. I don't recall him eating anything different, and I don't think he ate toilet paper. He seems fine, he's active and doesn't look like he's in pain. I don't know what could it be... should I worry? Please tell me what you think!