Correlation does not imply causation. Pharma companies use this simple correlation to sell you SSRIs. But the idea that "high-serotonin = nice, low serotonin = not nice" is simply plain flat out WRONG. Look in any neuropharmacology textbook for proof of this.
"Are you completely clueless"
"you retard" (post above yours)
Notice how I never, ever personally attacked either of you, but you both attacked me.
Anyway, you're feeling the collective effects of the SSRI/SNRI drug that you took, not the effects of serotonin going up (and btw, where is it rising? By how much? For how long? - I bet you can "feel" this too!).
The only case where you can actually feel the effects of elevated serotonin is when you have serotonin syndrome. Otherwise, serotonin and all other neurotransmitters are in a constant state of flux, and you cannot pin a certain feeling on a single neurotransmitter.
But if you want to keep your simplistic thinking (thanks bearlove to making you only good enough for "simple" info), then be my guest.