Leaving career to be stay-at-home mom

Excited along with a mix of many other emotions. I did well for myself with multiple promotions in the last few years and am kind of sad to put my career on hold. But no doubt about it, I would much rather take care of my baby and be a stay-at-home mom. My partner prefers this as well. Anyone go through this before? I’m having anxiety when I think about giving my 2 weeks notice within the next few weeks.