What was the med again that they were going to give you? Also some PO meds can be taken rectally (just sayin) there is also another idea, there are two meds one is oxyfast it's the narcotic component of Percocet in a highly concentrated liquid, the other is roxanol, liquid oral morphine they both come in 20mg/ml so highly concentrated, you could take it sub lingually. Now I have no idea what class these meds are in. Also fentanyl, is uber expensive and if you're going from Vicodin to that there's a big difference-good luck, I hope you get somewhere soon!
Be kind whenever possible. It is always possible.