Is being a STAHM supposed to be easy?

My fiancé keeps telling me I have it easy being a STAHM with only one infant who blessedly gives us full nights sleep and don’t cry as much. We just moved into a new house, my job is paying me well with maternity leave, and I’m only paying utilities on the house. I sound like I’m living the dream but why is it so hard for me to keep up?

We just had an argument that I don’t give my fiancé time nor do I give him my feelings when supposedly, I have all the time in the world and that “any woman would tell me that I have it easy and even he can do my job with his eyes closed.” I feel like Im doing stuff all throughout the day only to sit down at the end of the day thinking “what the hell did I do all day?” I’m just entering PP depression and im stressing myself out crying bc I feel like I’m not doing enough. I’m starting to take pain killers bc I’m aching emotionally/physically and generally, I would refuse pain killers. Hell, I even refused painkillers at first after I pushed out my baby lol.

My therapist is now further away and I can’t just swoop up and go to her bc of the baby. I need unbiased responses please. Do you think I have it good and shouldn’t feel like this and I should push more? What do you mamas do to get through the day?