Oh the joy symptoms and conditions

I notice vivid dreams/night mares the first night. The second day I notice thoughts of running of to very far places. The third night severe chest pains, extreme anxiety, irritability, and thoughts of suicide. Now I have been treated for depression in the past but never attempted suicide. After the third day of singulair i wanted to take a gun to my jugular vain in my neck and pull the trigger. Oh the joy of a panic attack.