how dangerous is a bowing basement wall?

so i’m renting the first floor of a pretty old house (late 1800s). this is one of the basement walls below my bedroom. it’s mostly brick but then there’s this concrete monstrosity freaking me out, it looks like they just slapped concrete over a collapsing brick wall. there’s a couple tiny horizontal cracks in it. i’ll admit since i’m just renting, my main question is: how nervous am i justified to feel sleeping right above this lol. is this normal for old houses?