Telling my family

So recently I found I am pregnant, may I add I got pregnant while on birth control?! I was not expecting this at all, but I am still happy of course.. but I am extremely scared to tell my family. I'm afraid Ima be disowned or looked down upon.. I'm 20 years old & my boyfriend & I have only been together for 3 months. A few years back I got pregnant for my ex.. who was very abusive... & they all disowned me when I came running to them.. my grandma told me to do leg exercises to lose the baby? My other grandma wanted to pay for an abortion.. my mom said, "I knew this would happen because you always fuck up" and told me to leave her house. I eventually lost my baby.. I was 8 weeks. Now I am pregnant again with my rainbow baby & idk how to tell my family. I am now 10 weeks, almost 11 weeks. Any suggestions? Should I wait?