I'm 27 weeks pregnant with my 2nd child! Last week I experienced excruciating arm pain in my left arm. It was sudden and started in my forearm. I hardly slept and by lunchtime the next day it had moved all the way to my shoulder. So I spent 5 hours in the ER. They checked for blood clots and when that came back negative they told me they didn't know what it was and sent me home. Took some tylonal and over the next 12 hours pain went away. Today the same exact thing has happened again but this time in my right arm. The pain is so bad I'm almost in tears when I barely move my arm. Has anyone else ever experienced this or know what could be causing the pain?