I've been going through bad anxiety since the summer. To cut a long story short I did 6 weeks on Sertraline and felt more depressed and exhausted. Since I stopped taking it I've had fatigue and anxiety every day. I just feel so exhausted by everything. Most days at work I feel like I'm going to collapse or pass out. My head is constantly in a fog. I am very afraid of CFS/ ME and am now terrified I have this. I can't honestly believe that anxiety can make you feel this bad. I feel like I must have CFS. Since coming off Sertraline I'm now getting dizziness and flu like feelings. I just feel like giving up. Every day is such a struggle. I have a great life. I have nothing to be depressed about, I just feel to sick and low to enjoy it.