Using stop the clock arragement

The exam is almost 20 mins left I had no clue what I was thinking at that time and due to the time pressure I was typing extremely fast as there was a lot left for Corporate Reporting and I did use the stop the clock and had a break but I forgot I was on the break and started writing but only lasted for 1 minute when the invigilator came and told me I shouldn't write during the break time and they had to note it down on the system, not sure what I shall do, shall I contact ICAEW to explain what was going on? Will they send me an email for this? not sure if I have to resit the exam or not