Private pregnancy

Hi everyone.. I just found out I will be expecting but no one knows besides my husband ( this will be our 3rd ) I also found out this week my sister in law is pregnant and they just announced to everyone today so we will be due around the same time. This will be her first and I do not want to take any special moment away from them so I decided i would like to keep my pregnancy private until I start showing. This will be also our last baby so I thought it would feel a bit special just having this secret between us but I’m not sure if he’s 100% honestly on board he’s a big family man and would love to tell everyone and have a baby shower but I don’t think i would like to do this at all. I’m happy but I’m not? Anyone else kept there pregnancy private? Any opinions?