Started Sertraline 50mg 2 weeks ago for anxiety as I was feeling suicidal. First few days more suicidal thoughts. I've been having massive adrenaline rushes on waking, almost like a burning throughout my whole body. Also, I'm not sleeping. I don't know whether they are helping. How long should I give them? Do they work for churning tummy and intrusive/obsessional thoughts well? All I can think about is the anxiety and one particular topic. And the fact that I'm never getting better. Is there hope?