Is this PPD or am I just not happy anymore?

For the last couple months I’ve been just so angry and frustrated with my partner. I feel like I’m the only one who takes care of our baby. He works and I stay home. I’m just so fed up to the point anything he says I just snap. I’m even angry and frustrated when my baby cries for along time. I try everything and I feel like she just doesn’t stop. I’m so frustrated and sad with the life I have. Don’t get me wrong I love my baby and I love my husband but I just feel stuck and alone and frustrated and tired… what am I doing wrong.. is this PPD or am I just unhappy with my life now.