Hello thanks for asking from HCM for your health related queries I can understand your concern. Loss of parent and then loss of job has probably build the significant stress which has precipitated these symptoms. The repeated panic attacks, feelings as if you had heart attack, anxiety episodes, lightheadedness, fear of sleep etc could denote a panic disorder or anxiety disorder. As per my opinion you should consider consulting a psychiatrist for these symptoms. In most cases Behaviour therapy coupled with relaxation exercises like Progressive Muscle Relaxation Exercise, Breathing Exercise help to reduce these symptoms and also reduce the intensity of attacks. If these methods don t result in improvement then medicines like SSRIs along with benzodiazepines can help. Benzodiazepines in low doses can be utilised to reduce the symptoms of severe panic and you will be able to function normally. Thanks, hope this helps you. Take care