I choose not to tell people when we are TTC and have even had to respond with "it just isn't that simple for some people" when asked (multiple times by a stupid relative who got me on a bad day ) when we were going to have a baby in the first place (it took 3 years to conceive our stillborn daughter).

I have a beautiful little boy and we are cooking a little girl at the moment. I know there will be some who assume we will stop there due to the "pigeon pair" but I have always wanted 3 living babies so I will be heading back for a 3rd. I actually tell people this when they ask if we know the gender (we do - just not telling them ) so they already know my position and (hopefully) won't ask such a stupid question.

Although really - it is no one else's business. You don't have to tell them anything