I'm on week 7. I've been feeling chuffed with myself, but keeping it secret from my family until it's a fait accomplis and I can run 5k comfortably. But yesterday, despite doing the usual warm up, I pulled my calf muscle, in like 3 steps of running, ow, Ow, OW! and could barely walk back. I iced it several times during the day, and after a night's sleep it feels a bit tender but better. I'm guessing I should keep it mobile but not stressed until it feels normal? Thinking I'll try a longish walk instead of the run today, but I'm hoping I don't slip backwards too far, which I've found at my age is extremely easy and quick to do. Any thoughts on what I did wrong, or how to rehabilitate fastest?