Hi and welcome to the forum! I am glad that I can help you.
You want to know whether the symptoms that you experience can be connected with Gilbert's syndrome.
Gilbert's syndrome is the most common hereditary cause of increased bilirubin due to the reduced activity of the enzyme glucuronyltransferase, which conjugates bilirubin and certain other lipophilic molecules. It has an autosomal recessive pattern of inheritance. The main symptom is jaundice which is caused by elevated levels of unconjugated bilirubin in the bloodstream (hyperbilirubinemia). There are symptoms such as fatigue, difficulty maintaining concentration, loss of appetite, abdominal pain, loss of weight and others that are reported to appear in individuals who experience Gilbert's syndrome, but are not confirmed with scientific studies.
Given the data that you described, the symptoms that you experience may or may not be connected with Gilbert's syndrome. See your doctor to rule out any conditions such as low or increased blood pressure, hypoglikemia, or urinary tract infection.
Please keep in mind that I provide medical information only. I am not able to diagnose medical conditions online. Please contact your doctor for further advice and information about diagnosis and treatment options of your current condition.