Been on sertraline since nov 21 . Last year dropped down to 50mg with no side effects . This year with drs advice did 4 weeks of 37.5, 4 weeks of 25 then 4 weeks of 12.5 . Last week I stopped taking completely . Since doing so I have had headaches all week , thought it might be heat related but still going on , just generally feel a bit spaced . Did anyone go through anything similar ?