Postpartum?

Why does it feel like i am in a cage?

I am a first time mom breastfeeding , my baby is 5 weeks and 1day old.

There is a time that i want to disappear or go far away from my family. And also sometimes i wish i was dead to ease all the pain and tiredness that i feel. Is it a postpartum depression do i need to consult a doctor right away?