I had it with both babies. The first time we didn't seek help until I started contemplating some really dark things. I packed my bags and told my hubby I was headed to my mom's house and he was welcome to drive me or not. The baby and I stayed there for 2 weeks. The first night, actually, my parents drugged me to sleep and kept the baby...I was just too far gone to be able to take care of her. So scary. When I got home, I got on anti-depressants and was able to get off about 2 months later. With the second baby, within a few days of being home the symptoms showed themselves and we hopped right back on the pills. Again, within a couple months I was able to get off of them. I will say, neither time did I stop the meds via doctor's orders, which is a huge no-no, but I knew I didn't need them anymore.
For me, being absolutely honest was the biggest help. My darkest thoughts I shared. I was ashamed and angry that I had them, but saying them out loud took some of their power away. I also gave myself permission to feel what I felt. Some nights, I didn't want the baby near me. My husband was incredibly supportive. He would hold her/them and give me space to breathe. I didn't even always leave the house but knowing he wasn't judging me when I was so angry helped. I was able to let my emotions run their course, while keeping the baby safe.
RELAX about your bond. My first born and I went through hell and back and you know what? She is so happy when I'm happy. She loves spending time with me and only mommy can chase away the shadows and heal the hurts. And you need to know, I had PPD and she had colic until almost 3 months old. And breastfeeding failed miserably. Talk about obstacles to bonding. Then I got pregnant again when she was 8 months old. So now I'm tired and grumpy and throwing up. Somehow, this little girl rode the waves and we worked together as a family on healing.
My daughters are 11 months and 2.5 years old and there have been times when I only got through the day by counting down the hours until my husband got home. But keep talking and your eyes on the goal, and BE HONEST about where you are emotionally. Find just (at least) one person that you can be absolutely, completely, totally (see the synonyms? I'm very serious about this) honest with and let them know where you are and what you're thinking.
As a post script: With your daughter being older, you might see if any of the activities YOU like can be adapted to include her. I felt a lot of resentment for a long time because I felt my kids were keeping me from what I loved doing, until I realized they could be part of it too. Specifically, I'm thinking about cooking right now, but I'm working the kids into a lot of MY favorite things and it's really helpful.
Good luck. YOU ARE NOT ALONE! And your daughter loves you and will love you for her you are, not the "perfect" mommy you think you need to be. You are the Mommy she chose when she entered your life. This makes you exactly the right, best, and most perfect parent for her!