Oh, S.. It is so difficult to watch them go through these things when they're so young. Our son didn't have it so bad, but he did get gas from time to time. I breastfed him...up until he was 18 months. So I just paid attention to what I was eating and how his body responded to the different foods. I was very careful about what I ate for the first nine months. Cabbage was a killer. So was broccoli. To soothe his pain, we found different positions in which to hold him, such as placing our forearm between his legs, under his torso and rocking him comfortably and gently. I do know that sitting upright, being held in an upright position, was best for him. When they lie flat, it's impossible for them to get any relief. My husband-to-be used to "pound" him so hard on his back, I thought he would give him brain damage. It turned out that was the only way to give him relief sometimes. He loved Daddy's patting. We oftentimes positioned oursleves in bed at night so that Kai could sleep on his belly on our chest and be in a vertical position. We didn't get much sleep, but at least he did. Don't worry, though. He'll pass this phase soon enough. Just hang in there.
I have seen something called Gripe Water by Baby's Bliss. I haven't tried it, but there are several products out there which are intended to ease the gas. Just keep trying different things, different positions. I don't know if you're breastfeeding or using formula, but that is another consideration. If he's on formula, maybe try a different one. Sorry. I have no experience with that. Maybe some other moms/mums :) out there could offer a suggestion. Gosh, five weeks old. You must be exhausted and high at the same time! Hope I was of some help to you. Hugs. And WELCOME to L.A.! Isn't the sunshine great?