Idk why I’m feeling this way

I’m feeling real depressed I have never felt like this before ever in my life so I don’t even know if I am or not. I just know I am very unhappy with everything right now my relationship, pregnancy, my life circumstances I just don’t feel like myself. All I wanna do is cry and ball up in corner somewhere I don’t have family like that to talk about anything like this and even if I do ion think they would understand what I’m feeling rn. I just want things to be different and I know the only way they will be if I do something to change it and I am. I should be happy over the moon just to be healthy and well but it’s hard. I feel like I’m failing in every aspect of life and just stuck in a black whole of confusion and anxiety. I’m 20w and feel like if I don’t get this under control I may end up getting ppd and I have a toddler to take care of that I love whole heartily and don’t want her to feel anything but joy and happiness. Idk I feel I need a break from all the deaths and lost I had in my family last year but there no time to and even if I do it’s the guilt of I should be doing this instead. Just wish I had my mom with me still I’m sure she would know what to do.