This is a little more than the burn I think...any explainations?
I go to the gym three times a week for an hour and a half to two hours, I also go swimming once a week, do half an hours pilates everyday. So, I'm used to the odd twinge, painful calf ect ect BUT for a couple of months now one of my calves has become ridiculously painful to the point I can't touch it. It feels like a bad bruise but there isn't a mark there. I can't walk without it hurting, I can't even sit still without it hurting.
I've given it rest but usually it hurts more when unworked. I'm not happy with breaking my routine for more than a week at a time either so i guess there isn't alot of recovery period, which I know is dumb.

What could possibly be wrong with it to hurt so bad?

Maybe there's a pulled muscle? I would talk to a dr about it.

thats the thing my doctors a bastard, if its nothing he'll be awfully patronising and mock me...to be honest i really want to avoid that
According to my dad, he's been a runner sinse before I was born, he's had all the injuries. He hasn't a clue what this is although he's pretty sure it isnt pulled

i had this in my ankle, i couldnt even sit there without it throbbing in fucking agony.

turned out i'd ripped my achilles tendon - go to a&e and get it checked out. what helped me and what i was advised to do was to alternate between hot and cold compresses, and ibuprofen. it REALLY helps take the edge off it.

good luck, i feel for you, its bloody awful.

since you don't like your doctor, you could always go to one of thise walk in clinic things, and you won't have to wait a while for an appointment too!