Ouch! from me too. I had exactly the same thing happen to me years ago. And you're right, it did feel like a car had thrown up a stone off the road and hit me in the calf.
Fortunately I hadn't snapped the tendon - but it was damaged - the docs described it as a minor tear! Walking hurt like he11 for weeks I'm sorry to say! So good luck Stevie.
Gastrocnemius it is - although it appears the achilles and knee have been damaged too - possibly caused by my trying to "adapt my walking stance to relieve the pain" - hence they gave me crutches, so sounds very much like what you had Bev, though I don't have much pain, more of an irritation. The pain comes when you forget you have it and Sunderland score an injury-time winner v Blackburn yesterday (note to self: don't jump out of rest bed when the lads score a winning goal)
I'm officially fed up already! Clearly I'm not going to be the most patient of erm, patients. I can't go out, or would have to use crutches
(I hate them already - much better to have a plastercast and people sign it)
I don't even get one of them blue badges! - actually I'm not allowed to drive either, some such nonsense about having full control of the vehicle (have you seen drivers out there lately?)
Worst of all, I still have to eat, but then can't exercise afterwards
the potential for boredom-eating and associated danger signs are in place.
Any suggestions of how to pass time without getting fat, spending too much (I comfort shop at times like this) or get into too much mischief?
Thanks for all your good wishes.