Am I fraud??

Just started my clinicals and usually after 4 and a half hours of working I’m super overstimulated with the noise of machines and timers NEVER getting stopped. Do you get used to it after a while?? In genuinely scared I might have something wrong with me mentally. I’m not like other techs, I have to write everything step by step to remember things with my notebook and I’m scared I won’t end up as fast as the other techs. The techs keep reminding me I’m doing great which helps but I feel as if they’re probably lying.