I usually suffer from palpitations due to stimulation of vagus nerve from gastric problems and sitting/lying posture.
Recently I've been experiencing some abnormal mental stress patterns such as slow onset of mental depression leading to defeaning negative thoughts and then these symptoms suddenly vanish and leaving me wondering "what just happened?"
Recently I've started to notice that these depression episodes occur along with a uncomfortable feeling on the left chest region from center to lower left as if a nerve string is upset.
I know I should seek the help of a professional for this but for my own curiosity I wonder if this mental stress can be caused by an upset vagus nerve