I grew up in an abusive household and we had a lot of family secrets. I realise this is because my background was not normal. It is very normal for me to keep things to myself, or only tell dh. However, some things I have told him, he has told his parents or siblings and I'm not sure whether I am being unreasonable in expecting these things to remain between us.
Some examples of things that he has told others:
I was suffering with some health issues a few years ago. Turned out to not be too serious but he had told others before we knew this.
Our suspicions that 3 year old dd has ASD. (I have this and to my knowledge he has not told anyone about me).
Drug addictions and psychological problems with some of my family members, and the problems this has caused.
I did not tell him not to tell anyone about these things, I just did not expect that he would. With our dd in particular, since finding out that he mentioned our suspicions to people, I have been very clear that I want this to remain private. I strongly feel that we should definitely not be saying anything to anyone while she has not been diagnosed, and even then, I feel it should be on a need to know basis. Outside of those who have to know, I think it should be up to dd, when she is old enough, to decide who she wants to tell. He has agreed not to speak about it anymore since I said this.
His family are big gossips, so this makes me less keen on them knowing things. I just want an objective view really as I know my thoughts on this have been coloured by growing up in a home full of secrets.