Depression during pregnancy

I’m really going through it. I’m beyond depressed and I can’t snap myself out of it. I eat because I know it’s for my babies but I don’t have the will to do anything. I’ve always wanted to be a mother and now I feel so bad because I don’t feel like I’m connecting with baby as I should. I’m doing this pregnancy by myself and all I have is my mom which I’m beyond grateful for but this isn’t how I imagined my life playing out. All I want to do is cry and sleep. I’m trying really hard not lose myself but I feel myself drifting. How do I bond with my babies? I love them and I talk to them but it doesn’t feel like enough.