Baby crying when passing wind

[Universe11]

Hi all,
My daughter is 3 months old.
She currently is in colic and constipation Aptamil milk.
Lately when she's been passing wind she seems to cry as though she's in pain and then it's followed with a very eggy smell so she's then trumped. She has always been a windy baby out of that end and struggled to burp when she was little hence the colic milk.
I just wondered if there is anything I can do or if anybody else has had this?
Yesterday she had a really dark green poo.
Thanks

I would talk to pediatrician or closest medical professional.

I'd try a comfort milk first. If that doesn't help you might want to consider the possibility of Cow's Milk Protein Allergy.