our babe was miserable after my milk came in...ends up soy and dairy were triggers for tummy troubles for him--but it was more than just gas (his tummy got rock hard and his little hands would be in TIGHT fists and his whole body was tense....it was so awful to watch).
Holding him face down on our arms, with our hand on his belly and his head supported by our forearm, really helped A LOT.
He also really loved when I would lay him down and rub/massage his whole body with lotion. I was extra gentle on his tummy, and did the whole i-love-you massage thing
We finally found gripe water at our health food store last week (ds is 5 months now), it hasn't done anything for his gas, but is great for clearing up his hiccups. Of course, I've never gotten him to take a full dosage
I hope little one is feeling better soon!