Is there an easy way to ask this question?

Was your baby planned?

The amount of times I have been asked this question in the last 17 week has blown my mind and to be honest I find it down right rude!

My first pregnancy was planned, 
This one however was one of the biggest shocks of my life, I don't regret it for even one second, though I do regret going out 2 nights before I found out.

With all the times I've been asked it got me thinking,
Is there a better way to ask a person this question or do you wait until they openly say something to you. 

The worst offender came up to me with "I heard you got yourself knocked up, again, I'm guessing it wasn't planned"
After I scraped myself up off the floor I replied with a simple "I guess I'm just very fertile"
What else do you say in that situation? Especially when its in a public place.
I went home that night and cried for over an hour with my husband fuming about how horrible someone could be.

I also receive the "I'm sorry but I have to ask, was this one planned? They are awfully close together"
Yes, they are close together but why does it even matter if we planned it?

I can't think of a nice way to even approach this subject if it was me asking someone else so for me I wouldn't, if they wanted to bring it up in conversation they would do so on their own account.

I believe I am a very open person but I think there are some questions that should only be asked by close family and if you want to share it then it's your own choice.