Irish twins

I just found out I’m expecting my second baby. My first is three months old...my husband and I were absolutely not trying for another baby. I am devastated. Obviously I’ll keep and love baby once the shock wears off. I’m just so irrationally mad. I was on birth control. Same pills I’ve taken since high school. My ob said I could have gotten defective pills? Idk. I guess I’m just here to vent and ask words if encouragement. Anyone have Irish twins? How did your families react when you told them? I’m a mess y’all