Baby with gas

Brittany👨‍👩‍👦‍👦☕️ • 28 yr old Boymom of two wonderful boys, Blaine and August. Currently pregnant with #3! Due December 2016 😍
My son will be 4 wks old tomorrow and he gets sooo gassy when he eats. He cries and squirms and farts. Is there anything you ladies have used that actually works for baby gas?? None of the stuff worked for my first son so I'm at a loss for what to try. Any advice would be awesome!!