weird frustration

so because of this whole stay at home thing i plan out my entire next day when i go to bed in my head. so for example today i was gonna get up eat breakfast then go in the pool for a while then go back inside and do school and then just chill and maybe clean a little. so im the pool and my dad tells me that his friend and her daughter are coming over. idk why but i got so incredibly frustrated that it wasnt a part of my plan and i dont feel like hanging out and my dad got mad that i was being stubborn but i have so much school to do and he doesn’t understand. he doesnt listen either and idk how to explain to him that it didnt fit into my plan for the day and that it bothers me so badly that i didnt plan my day around it and now im in the pool uncontrollably crying and i cant stop and i feel so frustrated. does anyone like know what this is or something bc i know its not a big deal so why am i so upset?