I dont' think that it is unusual for the doctor to mix anti-depressant medicaton. One may pick up where the other let's off, and I'm sure your doctor has her reasons. But, there is nothing wrong with you questioning what she is doing . You might want to check out some websites if you can find any about this. You might find some information on remedyfind.com. I use it a lot to check out a lot of medical and prescription questions.
I hope this helped.
Hi tangerine bear,
My mom's doctor prescribed Wellbutrin and Celexa for her. She tried it for a while but didn't like the feeling and went back to Celexa.
I took EffexorXR for six months and found it didn't work at all compared to Celexa. I tried taking the maximum dosage and it made me feel really weird. I didn't actually realize it wasn't working it was my family and psychologist. I was getting really upset at minor things and felt my life was totally out of control. Finally when my doctor said, "you know I don't think Effexor is working." I bit the bullet and switched. It's four months since the switch and I feel much better now.