Back story is that I fell pregnant in Aug, it was unplanned and just as I was getting my head around the news, I miscarried. We were both upset but understood that it just wasn't to be.
During the two weeks between finding out & losing the pregnancy, my DH told his pal that we were expecting a baby. This is after I specifically asked him to keep it between us (& he agreed), he also told a family member very (too) early on in my previous preg so has form.
When I confronted him about telling his friend, he replied 'well, don't tell me things then'.. It took a couple of weeks & alot of talking before he apologised. Incidentally, the friend, who he doesn't often see, has not been told the pregnancy was lost and so thinks I'm around 4mnts or so now..
I had a thread at the time about all this most were in general agreement that he was BU.
This morning, I've had a faint positive! 
losing the last pregnancy made me realise how much I would love another, which was always on the cards but perhaps just not so soon.
WIBU to keep this to myself until I'm closer to 12wks? Then he can tell all he likes. I'm not trying to be horrible but he has proven he has no regards for my feelings (having let me down on two previous pregnancies) and no self control. On the other hand.. Its his baby too. So WIBU to tell him when it's safe to tell everyone else and after I've had a scan??