I have pain in my lower back/hips area as well, but not the shooting pain like you describe. The SPD pain is at the front of the pubic bone, it's like a pain you would get if you fell forward onto a bicycle seat or something. Hard to describe! That didn't start until 20 weeks, but I don't remember when my hip pain started, it was earlier though. Turning over in bed definitely sucks and going from a seated to standing position, if I've been sitting for a while.
If you can see a chiro and/or massage therapist that work with pregnant women, it will probably help you out some!