I was prescribed Cipramil (Citalopram) 10mg while breastfeeding, for PND, but ended up talking myself out of taking them because I believed all the negative stuff about them.
One year on, I've ended up taking Citalopram 40mg and I feel back to being 'me' again and wish I'd done it sooner. I'm not saying it's the solution to everything - sleep deprivation will still make you feel weird in my experience (!), but AD's might be worth a try.
I suppose it depends how awful you really feel - although that's difficult to judge. I did the Edinburgh scale test and got a ridiculously high score but wasn't recommended AD's because my health visitor thought they were for wimps and I should pull myself together .
If your main worry is about passing the medication on in your milk though, don't be. The amounts that get through are minuscule and there really are some safe AD's out there. Various friends and relatives at the time suggested to me that I switch to bottles and take antidepressants, because I was in a real state and worried too about passing the drugs on through my milk, but I (a) really wanted to breastfeed and (b) at the time felt it was the ONLY thing I was doing right for DD, and didn't want that taken away from me and her. (Btw - I totally do not have a problem with people bottle feeding if that's what they choose, for whatever reason.)
Sorry to ramble on. Your message really struck a chord. I remember so clearly how it all felt (DD is 16 months old now). Big ((hugs)) to you, whatever you decide.
Bakedpotato - so glad to hear your experience with baby #2 was so positive. I sometimes feel I really lost something precious through depression with DD. Not sure (for lots of reasons) whether I'll ever have another baby, but it's good to know it doesn't have to be so awful...