My right calf muscle tightened during my Week 6 r1 and I've been doing lots of stretching, rubbing Deep Heat and foam rolling since. Unfortunately during my second 10-minute run today it gave me really hot pain and I had to stop running. I managed to walk the rest of the way back to complete the podcast but I'm so worried this is going to impact my training. Can anyone offer some advice? Sports injuries aren't something I've ever had to think about. Thanks.