When to seek help?

I don’t know how to explain how I’m feeling. I’m 6 days pp now, and I can’t eat, I cant think straight, and all I can do is lay in bed. I bust out crying all the time, and every time my baby cries I dread picking him up. I need a break so badly but I feel trapped. I feel so alone, lost, and confused. My nerves are absolutely shot dealing with having a new baby, 4 hours of sleep in a 24 hour period, and dealing with my mother being terminally ill. I know I need someone to talk to, but the thought of leaving my house gives me a panic attack. I’m so confused and don’t know what to do anymore. I just want to leave and run away.