There is a symptoms, question, complaint thread a few below here that you can post questions and such on, FYI. I think back pain early on is normal, though I don't have a lot of experience with it I am sure there are a few here that have. Good luck
My back has been hurting lately too (9 weeks). I think it's because I usually crack my back a lot and just haven't been able to lately. Also bending over a lot to pick up my toddlers is putting a strain on my back
I had major SI joint pain with my toddler, and it's already starting again (never really went away). Fun times when you work a job where you're on your feet 13hrs a day.
Re: Early back pain