You choose to defy Ms Sheridan, Skip detention and go home . You thought even if you want to do other wise the rumbling in your stomach was so intense that you lose control of your entire system balance.
So, you damn the consequences you know you might be facing the following day.
Finally leaving the school premises, wondering what is going to happens in the next class, will Ms Sheridan scold you or give in to your excuse, perhaps you have to tell her your part of the story but you have no single idea of how or where to start from.
You thought you could perhaps talk to your mom about this hellish first day at school but you remember mom hard a lot going on with her and don't want to add to her burden.
You finally thought of accepting your faith in the next class and concludes that after all you are just a little boy of 14 years old and if you can come up with a better explanation tomorrow to Ms Sheridan, she may just give you another chance to prove yourself until then you need to tell mom about this crazy rumbling stomach and get your true self back only then you can think about tomorrow.
So the choice here is to tell mom or not to tell?
You decide to only tell mom about your stomach rumbling and thought you can handle Ms Sheridan the following day.