My twins did the same thing - drove me nuts! LOL I'm exclusively nursing (they're 9 months now and are just now taking regular solids) and for about a month it seemed like all I did was lie on my back with my shirt open. On the bright side, I got alot of books read. And they also loved the medicine dropper. Truth be told, only one of them wanted to nurse all the time because of the pain and he's the one that never has suffered in silence; the other one just muscles through it with minimal whining.
I've seen you post about him before (the amber necklace made me remember) and I'm wondering if maybe he's got a different problem? This is a kind of random suggestion and it's only because my sister just went through this with her kid, and because I tend to be the kind of person to stick her nose in, but do you think he might be having some digestion issues? Reflux can be kind of sneaky (my sis's kid made chewing motions after he fed and burped and, combined with his fussiness, that's what finally tipped them off. Or maybe just belly problems in general? My fussy twin tends to be an irregular pooper and I make a tea that helps with that, plus calms him down (it's 2 cups chamomile, 1 tbsp fennel, 1 tsp fresh ginger, steep for a couple of hours, add 1/2 tsp baking soda - I give him 1 tsp at a time, usually no more than 3 in a day).
Anyway, good luck! My first kid fussed all day, every day for his first two years, so just hang in there!