Afraid to talk about my pregnancy

My brother in law's wife had a miscarriage last night. We were due just days apart. I'm afraid to talk about my pregnancy now in fear of causing the two of them any extra pain. I know how painful it is first hand, and don't want to add to it by basically throwing our pregnancy in their faces. They had already decided this was their last attempt due to age and previous complications, and my brother in law is taking it quite hard, as he was hoping to finally have a boy to carry on his name. Any words of advice?