Feeling like a failure

Ashley
My little one will be 3 weeks old on Friday. I had a pretty rough pregnancy. I was sick for the first half of it and then I was so swollen and my LO was so big, I ended up gaining almost 70 lbs. I had to be induced and after not progressing after my water had been broken, I had to have a c-section. I'm also breastfeeding, which has had a ton of challenges. My LO lost over a pound while we were in the hospital. I'm definitely still not producing enough and he will usually take supplement after drinking from me so I know he isn't getting what he needs. He seems to sleep for everyone but me and screams when I have him. I went to the dr yesterday and they said I definitely fall in the range for ppd, which of course I was anxious would happen. I just feel like my body is letting me down. Women are supposed to be able to do this right? Isn't my body made to have a baby naturally and produce enough milk to sustain my baby? I just feel like I'm failing at this. My husband doesn't seem to understand and helps me as much as possible and constantly reminds me that we have a healthy little boy. I'm so appreciative and thankful for that but it doesn't seem to make this any less difficult or me feel any less sad...