I had my first panic attack in early December. Since then I have little small anxiety moments, knots in stomach, etc. For the past few weeks it’s like my heart is stuck day and night in the flight or flight response. I hardly ever sleep at all. Has anyone gone through this and took Zoloft and it made them disappear? O have been prescribed 25mg for now. I feel this will never end. I’m fatigued, worn down, etc from the heart palpitations. The more I feel my heart beat the more it beats harder from the stress I am building up. I went to hospital and they did X-ray, ekg, blood work, all being good btw.