I would call your doc immediately. Some SSRI's should not be mixed together as they can lead to Seretonin Syndrome. Basically your body gets too much seretonin and it can cause some of the symptoms you are describing. I have had Seretonin Syndrome on more than one occassion and it was no fun. Please call your doc and let him/her know what is going on. You can do a drug interaction search on the net to find out more. Good luck.