So this is an argument that comes up whenever my mom (50)talks about how she found out she was pregnant with me (M 22). The way she tells the story is that one night she got super drunk and the next morning she forgot to take her birth control because of how hungover she was. Now she says that she would’ve eventually married my dad if he asked but made it clear that I “sped things up by quite a bit”. She often tells this story to her friends when they discuss pregnancy. This has always made me uncomfortable but I think the worst time was this weekend. She used this as an example to my sister and her friends (F 17-20) about how if they’re not sure if they’ve taken their birth control that day to take another so they don’t get pregnant. To me I feel like she’s saying I was an accident and that if she had a chance to relieve that day she would’ve taken her pill so she wouldn’t have gotten pregnant. This happened this weekend and we  actually got into a shouting match about it. My sister and her friends dipped at this point but we argued for about 10 mins before I left. She says I’m over reacting and that it’s a cute story and not to worry about it. My dad thinks I should apologize but I don’t think I’m in the wrong. AITA? 

TLDR: My mom tells a story that makes it seem like I was a mistake and if she could go back she would’ve made sure she didn’t get pregnant with me. 