AKT-4209

A 28-year-old woman presented with palpitations, breathlessness and chest pain, radiating to the left arm. These symptoms had started seven weeks ago, following the death of her father from a heart attack. Over the last decade, she had undergone investigations for abdominal pain, headaches, joint pains, and dyspareunia, but no significant cause was identified for these symptoms. What is the probable diagnosis?