Postpartum anxiety

I've been home with my baby girl for 4 days now and I feel like I'm going to lose my mind. I cannot eat, I can barely sleep and when I do sleep I wake up at every noise she makes. I cannot relax at all. All I can do is obsess over if she's breathing or not. I'm so foggy-headed and can't think straight. I don't want to talk or see anyone. I want to crawl into a hole and never come out. I just don't feel like myself. Is it ever going to get better?? 😣