2many I'm so sorry to read your news. Take care of yourself 
It's lovely to read through the thread and see how everyone is doing. I too got my 20 week scan date at my 12 week scan (19th Sept).
I'm just back from my first major social even whilst being pregnant. It was a girly weekend away and was very strange. One "friend's" attitude towards me was, quite frankly, disgusting. I went home alone early one night in tears of rage and woke feeling like perhaps I was over reacting until other friends mentioned that she had been out of order. I don't see me continuing that friendship!
I'm quite anxious about telling work. I'm a teacher and we are back next week so I'll be telling work on Monday. I'm on a temp contract covering a maternity leave and the lady I'm covering isn't due back until March but I would finish at Xmas. Needless to say this was a bit of a surprise baby 