I've just started on sertraline for depression, but I've noticed it's making me worse.. a few hours after taking the meds my mood is dramatically heightened for hours, it's making me snappy, irritable, tearful even angry. I'm supposed to be going from 50 to 100 tomorrow and I'm very nervous considering how I'm reacting on 50, I don't want to be dramatic but I almost feel bipolar like on this medication for a few hours a day. Is it normal?