Do you remember you first crush's name ?
Do you remember your school days ?
Do you remember your Facebook password ?
Do you remember your E Mail ID and password ?
IF YES,
then you have a good memory.
So, do not be Nervous at all.
Almost every student face this fear of not been able to recall the text during the exams.
Just study with calm mind.
Revise at regular intervals.
This is all what is required.