Now this is weird:
I picked up Olivia from her afternoon nap and somehow the weight of her bearing on the non pain side provided partial relief and now I'm able to walk around without hobbling or shuffling but getting up from sitting still takes some work.
I'd call my doctor but he's out for the weekend.
Sounds like you might have some spinal alignment issues. I threw my back out badly two years ago, and it took 16 weeks and 23 PT sessions to recover to the point where I could even start walking again. (The doctor had me on complete 100% bed rest for 3 full weeks and that was sheer hell). But I also tried acupuncture and it helped GREATLY (I continued it oce a week for 4 months); along with a twice a week treatment of pelvic traction (they hook you up to a device that stretches and uncompresses and re-aligns your spuine for about 20 minutes per treatment).
Once I was back on my feet - the therapist gave me a 20 minute regimen of various exercises to maintain back stregnth and flexibility - and I now do it religiously every morning.
End result - I went from massive/constant pain for 7 years (leading up to the incident that finally threw it out as I described above - I have a high pain tolerence, and people who also had bad backs were telling me 'it's normal as you get older; and just deal with it, I do...'); to today where I walk pretty much pain free (the occassional twinge if I don't watch how I lift or if I spend a lot of time on my feet).
Everyone thought I had slipped a disc when if fact it was just years of sleeping on one side, and not really exerciseing to keep in shape.
Seriously go see your actual doctor,and get some x-rays (or an MRI if your insurance will cover it); and find out what's going on. I wish I hadn't waited 7 years - and had to endure a major incident with total bed rest for a long period. It's not relaxing, and you don't want to experience that ever. It's the one memory that keeps me doing the exercise regimin every day.
Also, I found out that sitting puts the most strain on your lower back, standing is next, and lying prone puts the least strain. Also, if you have a habit of sleping on your right or left side; start trying to retrain yourself to just sleep prone on your back.