I sort of can relate. I had a terrible time getting on Zoloft but the side effects got better with time. I didn't sleep more than 2 hours every second night the first 14 days on it. I was put on it when it was newish and it was believed starting fast was the best so I started at 100 and upped to 200 after 3 days. I mostly felt nervous, weird and agitated but yes people can have other mental symptoms as well.

For me the worst stuff stopped after 2 weeks when I could sleep a little better and I felt "all better" after about 5 weeks.