Stressed mother :"(

Hi mummies..i just want to let it out here. I'm a first time mother. My husband starts work today after 1 month leave. My baby is turning 1 month in a few days. He left in the morning and i'm now alone for the first time with my baby and for the first time he was really fussy, cranky, crying non stop. All needs were met. Room/home temperature was good. I gave him comfort. Affection. Everything but nothing seems to work. He is finally sleeping now after so many attempt, for hours, of trying. Even left him alone to calm myself before attending to him again. I'm just so stressed and it's only day 1 of being alone with my baby. I have forever. I'm scared it won't get better.😔