what were your guys symptoms of postpartum depression?

i’m not having issues with bonding or anything with my baby but i’m having issues with my toddler my baby is six weeks old and i have a 21 month old and i’m really struggling with him. I’m extremely irritable all the time and extremely self critical i’m having bad anxiety over everything and am finding myself overwhelmed over the smallest things. i am yelling over the smallest things and i was not like this before idk if it’s just overall stress with two kids or just hormones.