T-28 Days to the Half Marathon

To add insult to injury, my back went out on Monday night. Oh, the pain! I have not done a thing since my long "run" last Saturday. My heels and ankles feel pretty good (BECAUSE I HAVEN'T BEEN ABLE TO USE THEM), but my back is tight and painful and I don't know if/how I'll do my 6 miles scheduled for this weekend. I am so scared that after 9 months of work and focus, I am going to fail at the end of this running journey. It's horrifying.