((hugs)) Mrs_B- this is such a hard decision for you hun Well done for thinking it through so carefully and hey look at the amazing start you have given bubba by BF for 9 months!! That's more than heaps of women do, so you should feel very proud of yourself. You need to listen quietly to what your gut is saying. I know Dr and DH want what's best for you, bless them but you need to feel really ok with your decision too. If that deicison is to wean, then great. If it's to keep BF despite your PND and reluctance to take drugs (totally hear you on that btw ), then great too...but make sure you are getting lots of support and good self care.
I also thought I had PND but found once I caught up just even a little bit of some sleep, that alot of the horrible feelings went away. I also had to make a MAJOR life adjustment to who was living in my home and prioritise Clodagh and my mental health. It wasn't an easy decision but its made life so much less stressful. I know that probably doesn't apply to you, I just mean sometimes major adjustment of rountines, patterns and behaviours are needed to get out of the hole.
Rambling now, but pls text me if you ever need a shoulder