The code only runs once because it is within an if-elif-else block. To repeatedly run it, try placing the entire if-elif-else statement withing a loop
@Geocube101 It still doesn't work! When I try to press 1 for the variable cross_examinationb (line 202), it goes back and displays cross_examination (line 199). But if I press 1 for that, it gives me the needed message, and then suddenly it displays the message it should've said when I pressed 1 for cross_examinationb.