Yep. That has been happening a little bit to me, too. The really, really weird thing is that at one point I was getting hideous zaps simultaneously in the crease of my leg and in my shoulder, but nowhere in between. It helped me to get on my hands and knees to give the baby more room and help her shift position.
Wife to rockin' SAHD DH (34) and mom to DD :, born Nov. 07 (from IUI #4); 09/09; anxious to TTC again soon