is it the baby blues or PPD?

Just wanted to see if there were any other moms out there that have been feeling down lately. My daughter turned 1 month yesterday and I love her dearly, I tried for so long to have her. I couldn't picture my life without her but lately I feel myself slowly losing my grip some days (and nights too) I cry a lot. I feel depressed, and sometimes worthless like I can't do anything right. My husband works long hours and I struggle with my new life as a stay at home mom. I miss working but I fear leaving my daughter. My anxiety is at an all time high, I won't go anywhere alone with the baby. I'm hoping these feelings will go away or at least get somewhat better. Is anyone else experiencing this or have you in the past? This is my first child, and I'm afraid to bring this up to anyone in my family.