Help help!

When is the best time to tell a parents and the whole world about pregnancy? I'm 16 weeks and 2 days.  Little about me,  I made a huge mistake on getting married and after a week I dicided that's not the life I wanted. It was a nightmare.  My soon to be ex husband, and I had  many problems months before and still put everything aside and we got married knowing it wasn't working.  The wedding turn out a big joke, fight after fight. Too any people involve. When I decided I was no longer staying with him my family gave me their back, but it wasn't life for him not me.   I moved out my parents house and it's over a year since I live alone. In the mean time I met someone who has meant a lot to me. We have had two miscarriage and this is going to be our rainbow baby, please don't judge if you don't have an idea I I'll been through. What I can say is that all this has changed me, but my parents are still not happy at all and not sure how they will respond to all this.   I can truly say I'm happy and that I made the right decision of my whole life leaving my soon to be ex husband.  I have leanered too many things in a short period of time. And one more thing. When everything happened my brother did the same thing, but on his side he has three kids and is now with someone different than his mother of his kids. My mom talks about his girlfriend as she was their best friend. But can't accept everything I did.  I'm soon to be 24 years old. Any advice