question: I am 26yrs old, female, I woke up after sleep as usual, and suddemly had sinking feeling in my heart, I felt dizzy, and had a sudden bout of presipitaion through my body and some bitter secretion in my mouth. Days later, I started getting more tired than usual, and have this sinking feeling in heart more often and dizziness. although I am not falling unconscious, because I sit down immediately and regain full consciousness soon. Thanks !