Hoping for advice here - I started the couch to 5 k two weeks ago but after the first run I felt quite a bit of pain the next day in my right lower back - I rested for a few days and then did the last two runs of week one - felt ok doing them but last run was on Friday and was hoping to start week two on Sunday but really suffering with lower back pain (all over this time) and even a bit of shooting pain in the left groin area - help! - thought this was my route to fitness but feel every bit of my age at the moment. I followed the pod cast to the letter not running too fast (as if I could anyway!) But feel a bit disheartened as I've never really been a sufferer of back pain, and beginning to think I'm doing more harm than good. Any advice welcome please.