Bummer: Hamstring Pain!

Week of May 28 ~ June 3

Well, the stress on the legs of two races in two weeks caught up with me.
I ran a Half on the 13th, then a 5K on the 20th. In between them I did a fairly hard interval workout on Wed. night, otherwise easy or nothing.
The following week, I only did two workouts: 6k of fast intervals on Wednesday and a fairly hard 24k on Sunday. So five days of rest. Then I took off Monday and Tuesday.
7 days of rest out of 9. You would think that would be enough. But...
Went out Wednesday for a 5k time trial and felt ok while warming up. Then felt ok at a not too hard 4:00/k pace for 400m. Then the left hamstring (where all the previous problems were) was sore for 400m. Then more sore for the next 400m. A dull pain. Which suddenly turned into a sharp pain, whereupon I immediately stopped.
After which it hurt to walk. And today, Sunday, it still hurts a bit to walk.
(By "sharp" I don't mean a severe pull, just sharp enough to tell me to stop.)

So...this time I think I've really learned the lesson. Don't do two races in two weeks, if one of them is a half marathon. (At least, if you're an older runner, don't. Older being, over 50?). Or if you "have to", just rest/jog for two weeks afterwards.
I think it was the second interval workout that was the mistake. Which was compounded by the Sunday 24km run.
Anyway, I'm out for at least a week, probably two. I believe that hamstring injuries require "active" rehab, so I'll jog a bit when I can, but today I couldn't even jog 4 strides. Did walk for an hour, though.

Hope the rest of you are feeling ok.