Working vs. Sahm

Just curious which you feel is better choice for you and why? I realize some don't have the option but if you do or if you could, would you rather be a stay at home mommy or work (even if its just part time)..

I still haven't told work I am pregnant and plan to wait a little longer, sadly don't trust some managers even if I do my job well. Plus money wise still need to figure out which is a better option