First Time Stay at Home Mom

I am a first time stay at home mom and I'm strating to feel like a single mom; does anyone else feel this way??
My fiancé is going above and beyond to make sure that we live comfortably so that we don't have to put our daughter in daycare. He works long hours 6 am to almost 6 pm Monday through Friday so I understand that he's tired when he gets home and I'm exclusively breastfeeding (I can't pump enough for a bottle feeding) so I know there's not much he can do!
I just can't help but feel like I'm raising our daughter alone 😔