This sounds more like anxiety than depression to me, but I'm not a doctor. ;)
It sounds more like you're anxious about
getting depression than that you have depression. Another thing you should know is that effexor is an antidepressant so if you did happen to become depressed, it would likely help ease the symptoms.
Medication changes are always hard because it takes the body awhile to adjust and there can be physical symptoms (like the body aches you are mentioning). I would try to stick it out if you can. It is totally normal to feel this way the first day of a change in medication. I'm currently getting off a medication and am pretty blown away by the wide variety of physical/emotional symptoms it is causing.
I hope you feel better soon! Best of luck. :)
Av
Post Edited (Avrielle) : 2/12/2013 10:19:37 PM (GMT-7)