Welp, training is on hold because I'm concerned I've injured my leg. I'd been getting minor shin pain that would go away within a couple hours after finishing my run, and I'd also been having some swelling that I assumed was water retention because I've been eating really terribly lately (my legs swell when I have too much salt). Yesterday, though, both went to extremes. My shins started to hurt mid-run, much more than usual, and instead of listening to my body I pushed through and finished. Then throughout the day my lower left leg continued to swell and the shin got more painful rather than less, and it still hurts this morning--nothing sharp, but a constant feeling of "hey, something is wrong in here." I brought the swelling down some with an anti-inflammatory and use of compression gear last night and this morning, but it's not back to normal. This morning I skipped my walk; I'd been thinking yesterday about doing tomorrow's 40 minute run as a 40 minute walk instead, but now I'm kind of thinking I don't even want to do that much.
I know I should probably talk to my doctor, but it's hard to get a timely appointment with her and my experience has been that I have to lead the discussion every time I go in, plus I don't think she has particular expertise in sports injuries. She's nice, but I kind of wish I'd chosen a different doctor.

I don't really want to deal with it when I suspect the professional verdict is just going to be RICE.
So this is a super bummer! Right now, though, I'm uncomfortable just being on my feet, so a break is absolutely in order. I'm going to keep getting up at my usual time so I don't lose my sleep schedule between now and whenever I'm able to start back up, and use the time I would have spent running tomorrow morning to do some research into what I can do to prevent this from happening again. I suspect it's partly because I've been neglecting to stretch or do strength training, but...I hate to say it, but I suspect my new shoes might have also contributed. I've had a lot of trouble getting the heels to stop slipping (I've been kicking myself so hard for not relacing them in the store to make absolute certain the runner's loop would do the trick) and I think it may have messed up my gait. I'm going to have to take a hard look at whether I can make some kind of alteration to the shoes or if I'm going to have to resign myself to replacing them.