Pain management while pregnant

I took my dog for a walk and she saw a rabbit. While trying to keep up with her at a decent waddle speed; I fell into a hole and felt the worst pain I've had in a long time. My husban immediately brought me to the ER because he was sure I had broken it, or sprained it at the very least. Well after 5 hours of sitting there, the most they told me was that it was badly sprained and most likely fractured but they weren't able to see that on the X-ray because it was too swollen. They went to give me prescription for Percocet but then remembered I was pregnant so told me all I could do was go home and take Tylenol. 

Well Tylenol isn't even coming close to taking the edge off the pain. Does anyone have any suggestions? I'm icing it and elevating it but I'm crying in pain almost all day. I need some sort of relief.