Ok so I've talked this through A LOT with my DH and DM but they are obviously both involved so I wanted to get some outside advice.
Will try not to drop feed but obviously don't want to out myself and it's a long story.
I've always had a difficult relationship with my F. Parents divorced when I was about 3. Didn't want to see me for a while but my DM thought it would be best and I went to see him every 3rd weekend. Most of those were spent with DSM as he was more interested in other things.
When I was 14 we had a big falling out, he was a bit violent and we consequently didn't speak until I was 17 when I made contact. I also eventually apologised for the falling out but never received one back.
All okish until my wedding day, halfway through the meal there was another huge argument, we both said things we shouldn't have, he called me a bitch and left but not before making a huge fuss in the car park and having most of my and DH's family out there trying to sort it out. That was over 2 years ago and we haven't spoken since.
To add a bit more background, I also know he was abusive to my DM and DSM, you wouldn't actually believe some of the things he did to them. He, of course, is never wrong.
So on to my actual question. DH and I are in our first month TTC. I don't really want F back job my life and I don't think he would probably accept a reconciliation anyway, but part of me feels it would be cruel to not tell him he is going to be a GF. I am in contact with other members of F and DSM's families so they will definitely find out from someone and I worry what will happen. Would I be best to tell them myself or wait until they find out and explain then? For the record I wouldn't ever trust him with any future DC on his own regardless of what happens.
Sorry for the long post, I've been wanting to do this for a while as I really need some independent views but only just plucked up the courage.