To working moms with 2+ kids and pregnant

Seriously... how did you do it? I feel like I’m about to collapse. I’m pregnant with my third and it’s been hell. Only 7 weeks 4 days and I’m so out of it. I have NO energy. The house is a mess. I haven’t been able to cook. I’m like HOW do other mothers do it? Before getting pregnant again I was super mom. Now I’m barely awake enough to be a mom :( I feel like a horrible person.