Hello, I have weird symptoms that I first thought were related to my stomach so I went to a GI who performed tests such as endoscopy, ultrasound, CT scan with contrast & blood tests. Everything came back negative. My symptoms are unexplained nausea, sensitivity to food smells, changes in taste (things are too bland or I can taste every flavor/not enjoy anything anymore), new persistent headaches especially in the morning, increased severity of vertigo/dizziness, loss of appetite/only able to eat certain foods because I lost interest in many foods. I have tried many medications for nausea and sensitivity to smell and the only thing that helped was CBD oil multiple times a day. what could be happening and who should I consult?