I Have Always Had Depression, I Feel Like There Is

I have always had depression, I feel like there is more to it than that. I have been on lexipro but tried something else after a life changing experience and I am now currently taking sertraline but I know that 200 mg is too much but 150 doesn't seem to be enough but the other psychiatrists in my city don't currently have openings for anyone new and I was looking for an assessment. And also what I could maybe do differently or add to my perscription to feel better.