Need help/advice!

My LO is 7months old. She is formula fed and has been teething. Lately I feed her one fruits or veggies small container of baby food a day. She has no temperature or anything but every morning she has like this watery dark green poop. And then she eventually poop normal later. She is acting normal just as happy but I just want to make sure this is normal/ok. I looked up diarrhea and I can't tell if she has that or not? If anyone knows anything please help me out! :)