I just want to be left alone

Postpartum is no joke. I felt fine at the hospital. Once I got home that all changed. I had a newborn and toddler to care for post c-section. I just want to be left alone. I'm aggravated, I'm in pain, I'm trying to explain to a 2 year old why he can't jump on me and he just cries thinking I don't want him. I'm exhausted. My s.o is trying to help but the house is becoming a mess and I'm trying not to push myself to clean it. I keep trying to tell myself, this won't last. It doesn't last forever. You'll be okay. But it's so much easier said. I feel like just locking myself in my room and not coming out until I'm well enough, but I can't do that.