I had similar issues minus the acid. I'm very sensitive to chemicals. I started at 5 then to 10 then to 20 then 15 and back to 10. Pdoc also put me on Wellbutrin when at 20mg do to the fatigue. For the headaches I found drinking plenty of water helped a lot. The first time I was at 10mg it made me suicidal. That's y Pdoc doubled. But when I was so tired she put me in the Wellbutrin at 100mg and it didn't work then she put me on 150 still tired. Finally she put me to 300mg and it helped but the Escitalopram had to be lowered from 20 slowly to a therapeutic 10. I'm not sure this combo works well considering I have very bad days with a few good mixed in. I also lack motivation to do anything. I see Pdoc today and I'll see what se says.