82 days to go... or not

So I'm feeling extremely discouraged. I haven't gone running since Thursday, the date of my last post. I was planning on going Saturday, but that morning as I was loading groceries into my car, I pulled the same muscle in my back that I hurt the previous week while on the treadmill. This time it was much worse though. I barely made it home and up the stairs to our apartment - I was in so much pain I was in tears. The rest of the day (and Sunday and today) was spent on the sofa with Advil and a heating pad. It's been frustrating. I'm not one to sit around and do nothing. I like to be active and getting things done. Laying on the sofa all day has been torture. It's hard to find a position in which I don't feel any pain. I feel like I need to be out running but I also know I need to take care of myself. My husband has been doing a great job of taking car of me and our place - doing the laundry and all the dishes, putting meals together, and keeping me company - which makes me feel bad because I have a hard time being waited upon. I'm not sure what is going to happen with the race at this point. It all comes down to time. I have until March 1st to change my event registration to the 5K instead of the half. I don't want to do that, but I also don't want to hurt myself even more. I'm not sure I can build up my endurance enough to run 13.1 miles between now and April 29th. The soonest I would start running again would be the later half of this week, maybe even Saturday. If you believe in God and the power of prayer, please pray for healing in my back and that I could run this race if it be His will. Thanks.