Me again - day 6 of Fluoxetine. Background - I took fluoxetine before (60mg.) I went off about a year ago and now I'm starting up again (20mg.) I also take Mirtazapine (15mg) and I have for 15 years. I'm on day 6 of Fluoxitine and I feel lousy - I feel worse than I did before starting the medication. Nauseous, anxious, flushed/warm, sweaty, dizzy, blurry vision, clenched jaw. I know these are "normal" side effects but I can't shake the feeling it's something worse (serotonin syndrome.) I keep telling myself I've taken these medications before with no ill effects, that if it was serotonin syndrome I'd be much more ill, that if it was serotonin syndrome it would be getting progressively worse (these spells come and go), and if it was serotonin syndrome I would have had symptoms on day one (symptoms didn't appear until day 3.) pupils aren't dialated, no diarrhea, I start shaking sometimes but it passes, I've been taking my temperature multiple times a day and sometimes it goes to 99°F-99.6°F but then it usually comes back down. Even though I'm trying to be rational I just can't shake this fear because I'm combining two medications. Every night I'm in tears not wanting to take my Mirtazapine but if I don't I'm awake all night.