So far doctors have ruled out side effects of medication, dehydration, electrolyte imbalance, blood clots, and even anxiety. I've had blood work taken to rule out anemia (still waiting on the results although my doctor is doubtful it is). It's not related to standing up quickly, diet, hydration, or sleep. All vital signs are normal as well. What could this possibly be related to? I feel we've exhausted all possibilities. Thank you for your feedback in advance.