I don't blame you about not wanting to be medicated. I think a LOT of doctors are far too quick to medicate. However, you very well could have a hormonal imbalance and HORMONES would be required, NOT anti-depressants. This happened to a friend of mine--she had such a hormonal imbalance after her 2nd child that she was very depressed and her hair even turned gray. Her doctor (a male) smugly put her on meds, not even telling her it was anti-depressant. She was outraged when she learned that's what it was. She changed doctors, got put on hormones and felt radically better pretty quickly.
Now, also, you have a new baby. Your life has been turned UPSIDE DOWN. We've all been there--you need to definitely lower your expectations if you have them elevated. Just do what you can to get through the day and remember IT WILL GET BETTER!
The other thing that will help you a LOT is some form of exercise.Exercise will get the endorphins kicking in in your system and will help elevate your mood, and you'll also feel as if you're doing something good for yourself. Even taking the baby out in the stroller for a walk (and the weather has been quite conducive to that right now)--get out, get fresh air. Better yet, can you find other moms with newborns? Having others to share and commiserate is really invaluable. You need that.
Also, is your husband being supportive? That is hugely important too.
Anyhow, DO talk to your doctor. You need to understand that your doctor is your partner in this, and if you think you're being railroaded into taking meds you don't or shouldn't take, then get another doctor. I'd be happy to recommend a couple of great Ob/gyns in town, so feel free to contact me!
J.
P.S. Autumn's reply about weaning GRADUALLY off of anti-depressants is VERY important. Any brain med must be very slowly weaned off of, otherwise you will have a real problem on your hands.