Go to the ER and request a 48hr supply to get you through until your next script is available. If that is out of the realm of possibilities, cut your dosage to carry you through the 2days so you at least still have some of the med in your system to avoid the severity of withdrawal.
Hey there, I think you have 2 options. ER department should give you a temporary refill or visit your out of hours doctor for a prescription. At this time of year hopefully it will be a fast process for you and I hope you won't have to travel too far. I hope you can get this done asap considering withdrawal is severe for you. Best of luck