I'm sorry to ask this but I'm really surprised by this.
Just got BFP #1 (think I'm 5+3). I thought that I'd be itching to tell people, wouldn't be able to control myself etc, but I'm actually completely the opposite.
DH is looking forward to telling people (we're going to wait until we've had a 12 week scan) but if I'm completely honest, I'm dreading it. I just want it to be just us who know until baby is probably about 18 months old 
Bit of background info. My sister will be ridiculously excited (not sure I have the energy to cope with all the enthusiasm!), my dad will get emotional, and my mum will persist in giving advice regardless of whether it is wanted or not. On dh's side, his brother and father will be disinterested, but his mother is going to be a fucking nightmare. (When we got engaged, she announced that she wore her engagement ring when she saw us to remind us that, she had once got engaged too and, of course, she "knew what it was all about"
) I know that she will ring constantly, interfere, persistently voice her opinion on things that don't concern her and generally be a pain in the fucking arse.
DH has also said that he wants to tell both families together as we need to be "fair"
Oh, and to top it all off, DH will be the one to do all the hard work, I'll have an easy time of it 
Sorry, it's turned into a bit of a rant.
Please, can anyone offer me any advice? I'm beginning to dread telling anyone and, at a time when I should be excited and thrilled and beside myself with joy, I'm not.