This fatigue is often described as "Paxil flu" or "SSRIs flu", Biscotaki, and it's a very very common WD symptom. It's not real flu, it's just your nervous system, your entite body being in chaos. You need some time before it will start improving, but it will start improving. It always does. How long the symptoms will last all depends on many different factors, one's body's physiological abilities including. Some take more time to heal, some less. There's every reason to believe you'll be experiencing the so called "windows" = the time when the symptoms get a bit better, which will offer you some respite from this suffering. Step by step. Again, the symptoms you're experiencing is WD. They are bizarre and extremelly painful, but they will be getting better.