This "seriously rough shape" run wound up doing me in. I had been trial prepping that week, so underslept and poorly fueled. Wound up settling the case late on Friday and mapped out this hilly 12.5 "I'm free" run. The next week I started feeling a pain in my lower right leg but tried to push through. Bailed from my scheduled 17 mi long run at 10. The following week it continued all week and into the weekend, where I bailed at 5 miles.
Was worried about a stress fracture, so went to sports medicine, and he confirmed my concern was warranted and that I should stop cold until an MRI. Wound up just being a stress reaction and not a fx, so that's good, but by the time the waiting for MRI and f/u was all said and done, it was about a month of nothing. So, obviously no marathon this time around.
The first couple runs out after the green light, I could still feel things a little, but I switched to new shoes and have been feeling good easing back in. Made it out for 9 last Saturday and am doing a little PT more to avoid future shin stuff than anything else at this point. I figured while there I would mention that I never acted on the script for PT for my back from last summer, and the PT was nice enough to evaluate me for that too and let me get a new script after. Seems pretty convinced its my SI joint, and it seems reasonably well fucked, so I am going to actually follow through on it this time and try to get that right.
I was pretty dejected for a couple weeks and ate like garbage, among other wheels-are-falling-off stuff. Amazing how the disruption in my routine derailed a lot of positive momentum in other areas, but a good reminder that it takes consistent effort on all this stuff.
tl;dr - I pushed it a little to hard, was injured and acted like a baby about it for a while but am back on the right track.