3 Hours Attempt ..

i was in my 3rd hour of the mock exam; 120 questions answered, 80 to go. then come the calculation's question, i retrieved the paper and pen only to press the mouse accidentally and it shows some error message. no back nor refresh button can be found. taking a deep breathe in, i have to close the window and see the list of mock exam done. what's shown in the list is the attempt i made yesterday, only 5 question answered. i have no other choice but to repeat the whole process. i'm trying darn hard to control my annoyance at the moment as there's nothing but my carelessness - and the stupid mouse for being too sensitive - to blame.
a sign that i need to reschedule the exam? i wonder ...