I started sertraline 50 mg 4 and 1/2 weeks ago for health anxiety, general anxiety and depression. Also 50 mg trazadone for insomnia. At the 2-3 week point I was experiencing some improvements- better appetite, socializing again, much less worry, sleeping better with the trazadone. At my 3 week doctor visit he decided to not increase my dosage since I was seeing improvement. 3 days later I crashed- anxiety and worry, chest tightness, stomach issues, no appetite and back to 2-3 hours of sleep a night even with increasing trazadone to 100 mg. I called my doctor and was told to increase sertraline to 100 mg. I went to 75 mg for 3 days, then 100 mg for last 5 days. I still feel terrible. How could I have had significant improvement at 2-3 weeks and now be back to how I was before starting sertraline?