Serotonin syndrome?

Serotonin syndrome?

I am 18, female, 150lbs, I have bulimia, 5’6, I’m taking 450mg bupropion, 10mg trintellix, idk what dose of trazodone, and i began taking Effexor 3 days ago. I take a multivitamin.

It has been difficult to separate the symptoms of serotonin syndrome (which my psychiatrist warned me about) and the effexor. I also hit my head so that might play a role in it.

My pupils are huge, I have a frequent abdominal twitch, I’m cold, I’m shaky, I can see my veins, I have a tremendous amount of brain fog, my heart rate is up, I feel dizzy when I stand up, and I just overall feel VERY strange.

Is this worth going to the ER for?