It does get better! I had severe PND and was just literally exhausted and not bonding at all. He just screamed nonstop for 8-10 hours straight with maybe 15 minute naps here and there, then sleep maybe an hour, then start all over. But it got better after about 6 weeks, then better again at 2 months, then 3, etc... It took me about 4 months to feel bonded, to be really honest, but I think that is rare. My son is 7 months old now and I can't imagine life without him.
Keep thinking of the first smiles, playing together, the new things he will learn... It seems like so far away at the time but when you get there, it goes by so quickly, like everyone says.
It is rough but hang in there!! I would mention it to your doctor too. It's good to have that support. I don't know for me if it was from hormones, but I think it was from exhaustion and frustration with trying to do so much. Try to focus on what absolutely 100% needs to be done now and don't worry about anything else, just you and baby, at least for the first couple months. And if you have people around, don't feel bad asking for help!!
I felt really bad about not feeling bonded. I honestly didn't even want to be around him some days and had to force myself. It's a weird feeling and totally not how I expected it would be, but it totally changed and now I love playing with him and feeding him. Though I am still tired sometimes lol.
But nothing like before.