Depression is making me mute

Sometimes I feel like I’m not real and that I’m living my life and constant fear. I feel like I’m high or something idk what it is. I can’t sleep, my appetite is up and down, I can’t focus, I’m always worried if I’m saying the wrong like I’m walking on eggshells. I don’t know what to with myself. I’m falling apart everyday and I can’t take it. I need advice. What is going on with me? Is this a postpartum anxiety overdrive or what?