Nosy & Intrusive Friends/Family

During my last pregnancy, I surprisingly announced the pending arrival when I found out the gender. No details were given the entire time, and then we didn't publicly share the delivery details until the day after his birth. Needless to say, a lot of people were shocked, but really happy for us! Fast forward almost 2 and a half years later, and I am due with our last in December. We shared the announcement at the end of the first trimester, the gender once we had the big ultrasound, but we are treating this time the same as the last by being vague about a specific due date or sharing a name (we are still deciding on one and won't be telling it until this one is born either). For those who did similar, how did you politely ask that people stop asking for details and respect the fact that it's a special event you wish to keep to yourselves without sounding like a complete jerk? We're happy that everyone is thrilled for us, but we're having this baby for us, not for the expectations of everyone else. We are VERY private people and just wish it could be respected :/

Update: We DO share little pregnancy posts on our Facebook pages since the grand majority of our friends and family are on there, and EVERYONE knows we're due in December, we just refrain from giving the specific date so I'm not badgered as we get closer to it. There are many who love to share every little moment and detail of their pregnancy, but this is a special event between myself and my SO. I can't see how it's wrong to want something this intimate to remain "ours" and share what we wish. I'm not hiding from anyone, and they will get to meet our little one after they're born.