I was given a prescription for Lexapro and haven't started it yet. Have depression and anxiety. Was taking Zoloft and Xanax ER previously. New Dr took me off both of those, but I was doing well on them. Now I'm so low I can hardly get out of bed for work each day. What can I expect from Lexapro? I'm scared to start a new Antidepressant. But feel like I really need to.