Congratulations on your newest addition!

I agree with just sticking to the 'less info as possible' about why/what the appointments are about and just do the 'just that time of year to be having some routine tests done ~ nothing to worry about' ~ chances are they will guess eventually but everyone knows why women keep a new pregnancy on the down low for at least the first 3 months and will forgive you not being open about that ~ but if you outright 'lied' during that time I agree with the other ladies that it will make people question their trust and start your 'happy news' out with a bad taste in their mouths.