Pregnancy news

I told my/hubby's immediate family of my pregnancy at week 6 but when I told my dad I wanted to tell the news to other relatives after 3 months, my dad keeps comparing this to my cousin who didn't tell us she had cancer until she was in her final moments which really infuriated me because it's clearly not the same!! As a father of 2 miscarriages himself, how do I convince him that this is normal?? Already pregnancy makes me emotional and I really don't want my pregnancy to give me this kind of unnecessary drama