Hi Nordicmom, Sorry, I missed your message in all the excitement.
I don't really know if the odd feeling in your lower back is a symptom or not...it could be implantation possibly.
All I do know is that it's ridiculously hard not to symptom spot every tiny little thing. I give my DP frequent updates of my 'new' symptoms and it's almost a running joke now, as they come and go and I believe for sure I am and then I'm not PG.
Hope you get good news in a week. 