NEED HELP

okay so i’m not happy anymore in my relationship so i have come to the decision to end it. but... he has exams coming up and so i’m stuck on whether to wait until they’re over (about a month and a bit away) or whether to just do it bc i can’t take it anymore. i have a few family things of this that i’m invited to in this next month and i feel so guilty going knowing what i want to end up doing. please help!!!