So i do not clinicly know if this is anxiety and i normally am not anxious of doing things but its my time to enter a university i really want to go to and the entrance exam scare me to death i was doing check ups with a doctor and my heart rate went to 140bpm which as much as i know is like wayyy too high but the problem is i do not feel the jump in bpm but rather like losing my focus which i need for the tests. Is there any atleast temporary solution to this that i can practice for few days so im calmer when the actual test starts