I have a common case of depression/anxiety/obsessive thinking, and I've been on 50mg of Zoloft for the past 4 months or so. I just started school two weeks ago(I'm 15), and this week I've been feeling down again and thinking too much. I did very well over the summer, and I was wondering if my teenage emotions are just contributing or if I need to consider raising my medication with the stress of school. Any suggestions/advice is welcome.