Is it possible that you are pregnant?
If it did not cause nausea before, I doubt that it's the Effexor. You need to see your doctor. It could be caused by a lot of different things. It could even be caused by some breakthrough anxiety. Only a doctor can find out for sure what is going on. Make an appointment and let us know how you make out.
I'm definitely not pregnant
I didn't think it was either, but I know a lot of tests would need to be run which means a lot of money so I figured I would ask. But if we are in fact able to make an appointment I'll leave an update! Thank you so much!