Like all the other mommies who've responded, I feel for you! Two of my three children were colicky and it was torture. The thing that seemed to work with both of them was constant motion and sound. My pediatrician gave me some great insight when I visited him with my second colicky baby.
He read some journal articles postulating that for some unknown reason, babies really should be in the womb for 12 weeks longer so that their internal organs can develop. This is why you always hear that babies outgrow their colicky stage after 12 weeks. This is also why you hear advice to simulate the 'womb' environment for the colicky baby----swaddling (tight), sounds (white noise), shooshing, swaying, swinging, etc. He was explaining to me that it is pretty loud in the womb for the baby...heart beat, blood circulating, mom talking, etc. The baby is also still used to lots of movement from mom.
My ped also gave me an article about how some cultures tightly swaddle their baby (blanket with a belt, something heavy to soothe your tummy). Again, the baby is nice and snug in the womb to the point they're cramped up. Even as kids or adults, when you have a tummy ache, your instinct is to hold your tummy...not strecth out on your back to sleep (that goes against what you know to make your tummy feel better)....and when nothing works, just let your baby cry it out so you can take a break (notice I didn't say get some sleep b/c you know you can't sleep when your precious little baby is crying in the next room). I also did try mylicon, gripe water, etc.
At night, I started a ritual where I would give baby a bath using lavender scented baby with with lavendar lotion to calm her down. I used this as a routine so she'd start to think this was part of her schedule. During the day, my mom purchased me some chamomile oil. I would rub that on my babies' bellies and wrap a bandana around their tummies- so that there is more pressure on their tummies--don't know if this worked, but I tried everything. I got really frustrated when I finally got baby to sleep, would put them down on their backs, then five seconds later, they'd jerk themselves awake----UGH!!! My mother-in law taught me a trick- when you put them down once they're asleep, steadily put them down and keep your hand on their belly for 10 seconds (that way they can ease into their new position and still feel the warmth of your hand).---that made a difference for me.
At this point in time, one day feels like a marathon for you---hang in there. Trust me, one of these days you'll look back, remember the heck you went through and will be giving similar advice to a new mother =)
Don't forget to savor even these moments- it's what being a mom is all about.--sorry so long--- your question just brought back cute memories of my kids when they were babies.