Yes, it is definetly one of the withdrawal symptoms, and it could last for several day to a week...you should not stop like this, but over a three week period....ask your doctor for enough to last that long at a reduced dose, and by end of third week,every other day..
I am in the process of withdrawaling from Wellbutrin. I have experience nausea, head aches, and extreme fatigue. I don't know how long this will last once I stop. However, you should not stop this medication cold turkey.