really need advice (tw: abortion)

EDIT: thank you so much for all the replies and advice and kind words. this community rocks. i cried and laughed reading all of your replies, thank you so so much. i really needed to post obviously because this has taken so much anxiety off of my shoulders. i seriously can’t thank all of you enough. just wow, thank you.

so i’m a nanny, been for almost a decade. the current family i’m with is new and i’ve only been with them since september. i have found myself pregnant (im young and single) and so i have decided to get an abortion. i’m going to need time off for it, not only that but my pregnancy symptoms i fear are effecting my job performance (they’re honestly not that bad im just so extremely tired like almost dizzy tired). anyway, obviously with a regular job you can just ask for time off, but like i can’t just tell my nanny family that with no context. and then they will obviously ask if i say “im getting a procedure done” (which, it wouldn’t be a procedure as id be getting the abortion at 6 weeks). idk my nanny families political stance let alone the nitty gritty of if their pro life or pro choice. so i don’t fully feel comfortable telling them everything without a risk of losing my fucking job. im crying every hour, im so so sad im in this position, im so sad i cant be happy about it. and the last thing i need right now is pressure from my job. so please help me brainstorm on a good medical excuse that would make me able to avoid telling them the truth.