Chances of twins???👶👶

Ok, so twins run on both sides of my family. My mother's uncles were twins and so are my grandpa's uncles on my dad's side. None of my moms sisters or dads sisters have had twins. My mom said she was pregnant with them and had to abort. She had pictures on her phone of ultra sounds, but my mom is a GIANT liar and you couldn't really tell if it was babies or not. She said there was a bit and a girl. Idk if I believe her or not. Oh, and don't say anything about her abortion. She HAD to have it or it would have killed her. The babies wouldn't have made it either way. I'm not sure if there really was an abortion or not because she is known for her lies and such. So, I was wondering what are my chances if both sides haven't had twins, meaning my mom was lying. And if my mom really did have twins??1