Damn. So the pain down the back of my left thigh appears to be a hamstring strain. So, in order to make sure I don't do myself any long-term damage -and- I've got a fighting change of training properly soon, I'm laying off running and weight training for a good few days.
Bit of a bugger as it means I get to eat less and it throws out my eating plan for the rest of this week at least. And I've had to reschedule my first PT session with my new trainer for next Friday rather than this Friday. Bah.
I am consoling myself with a skinny caramel macchiato and will aim just to stay within maintenance kcals for the rest of the week rather than any deficit. And this afternoon, I'm booked in for a deep tissue massage to help things on their way to mending. (expect whining about how much that hurts later ;o))