Post natal blues

How did mummies cope with post natal blues? It's my second week. First week hubby was with me so I didn't feel very bad. This week he went back to work. And I am feeling very devastated. I don't know how to describe. I tried to sleep. The most I can take afternoon nap for 1 hr. Even though I take care the baby by myself thru out the night. I tried to keep myself occupied by tidying something. After sometime I can't tolerate. I start to cry.