I dont have pins and needles in my bump, but I have them in my hands, and they are also aching just like you are describing. I get pins and needles if I grip anything for too long like my hairdryer, then they ache and feel stiff. I was told its carpal tunnel syndrome, I mentioned it to the community midwife the other day and she said to tell the hospital when I go next and they might get me a support splint or refer me for a bit of physio.
I think its just one of those things in pregnancy, I have had it with all them, it goes after the baby is born, but it can be quite uncomfortable and I seem to have lost strength in my grip.
Tracey xx