I apologize in advance for the photo) what could it be? We're complete…

I apologize in advance for the photo) what could it be? We're completely on the go, but yesterday and today I gave banana to lick, and she ate a piece of it. On the internet they say from bananas and chocolate. I also ate chocolate this morning) is it because of them? Is it not worms??? or should we still do a stool analysis?