Sorry I missed this Julie, my computer has been playing tricks on me.
I have had times when I feel a twinge or two at the valve site, but I'm not sure why we would. The tubes are connected to both ends of the valve and it drains in the lower pelvis. I sometimes feel a burning sensation there, in my lower gut, which is where my shunt drains to.
I have noticed that as my body gets used to the new setting, the symptoms start creeping back. Then we lower the adjustment and it gets better for a while and then need to adjust the valve again. Bear in mind, we aren't supposed to do a whole lot of twisting. Might you have dislodged a tube??