First of all, I am so sorry to hear of your difficulty and you should feel very proud to have been able to walk 1.5 miles with your walker. Great job!! Next, I would recommend that you go see a medical doctor and have an x-ray taken of your back. With that much pain and not being able to be very mobile you could have injured your back seriously in your fall. Yes, still watch and monitor your calorie intake, but you also need to get that movement into your day. I pray that you get some relief soon and please see a doctor to check you out to make sure nothing is broken. I had taken a terrible fall over my son's dog leash and did make sure nothing was broken by the doctor. THEN I went to my chiropractor and found out that my ribs and spine was out of whack so he adjusted me and I improved within 3 days. Please just make sure nothing is broken.