I had four kids in four years. The baby stuff is hard. You're hormonal and exhausted. My best advice is get out of the house. Go for a walk or meet a friend. I used to roam the malls with my crew just so I didn't go crazy. Find a parenting network near you if you can and reach out. If you start to feel worse, please see your doctor. It may not feel like post partum depression, but the flags are there. Sometimes we don't see it ourselves.
Does it get better? Absolutely. There will be many moments that steal your heart. I know its hard, but I promise you its worth it.