Help?!? my baby cries for 6-8hrs solid every day.. plus about 3..

[tinkerbelle]

My babe is now 3 weeks.. every afternoon or evening, its 6-8hrs of solid crying.. plus a good 3 hrs of solid crying in the mornings. I read in the child health nurse booklet that babies usually on average cry for 2hrs a day total..
He had reflux which has improved and I think pretty much gone since a trip to the cranial osteopath.. but now we are left with what I think is colic, despite the fact the midwives and child health nurses keep telling me this is normal baby behaviour..?? I dont believe that it could possibly be normal..
Am going back for another osteo appointment in the new year when the osteo is back at work..
He works himself into such a fit, arching his back, stiffening his legs, sweating, screaming his little lungs out and nothing I do settles him - EXCEPT if I let him be on my boob for up to 8hrs straight.. it is the only thing that calms him. I know he's getting plenty of milk as I can see it drip out his mouth when he's finished a feed or if I pull him off the boob, and he's put on double the amount of weight he's meant to in a week from all the constant feeding.
Im trying to limit his feeds to at least every 2 hrs as his tummy obviously gets quite full and it makes him uncomfortable but waiting the 2 hrs out is often quite a challenge. My husband keeps saying, 'just put him on your boob, he's going to have a heart attack!'
Other things we have tried to calm him, none of which has worked..
* Baths - usually works while he's in the bath but he's wide awake after.
* Driving the car around the block - settles for 15mins after the drive then wakes again.
* Baby swing - has settled him to sleep on two occasions
* Hammock - wont even let us put him in it.
* White noise (dryer, cd of rain noise, radio off station) - the dryer calms him down for about 10 mins.
* Dummy - might suck it for half an hour and then unsettled again.
* Rocking/bobbing him in my arms - might calm him for 10 mins
* Sitting in the rocking chair and rocking him
* Swaddling - he hates it at the moment as the weather is just too hot.
* Walking around with him
* Singing/talking - might calm him for 10 mins
* Patting his bottom - might calm him for 10 mins
* And all the obvious things like checking his nappy, his temperature, his clothing etc..
* Im also on a real bland diet avoiding all possible allergenic foods (as suggested by my naturopath).

Is there anything else I haven't thought of?? I dont know what I am going to do when my husband goes back to work as its physically draining and sometimes I feel like I am literally going to fall asleep holding him.. Ive taken to lying on my bed with him attached to me, so I can get some rest! But Im worried this is quite unsafe..

What to do... ?!?!