Been on sertraline 25mg for 3 week one a day in morning was ok had some of the side now over 3 weeks feeling more anxiety and depressed and overthinkg more that im going mad don't want to up medication dose as thay already make me feel tired and spaced out on 25mg I was fine 2 and a bit weeks of this medication now im feeling panicky again and depression has come back is this a side effect and will it pass