Hello dear madam , u have mentioned that it is little bitof anxiety. A little bit of anxiety is ok. Anxiety happens of two reason .
1. When u want to perform at the maximum (exam, marriage arrangement , auspicious occasion,etc .,)
2. When u don't know the subject (if u ask me speak about theology and electrical engineering in detail) I will become anxious .
The conclusion is a little bit of anxiety before performing anything is healthy .(improves performance ). See for Ur self ,because of exam u learnt more than what u learnt before few days .
If it exceeds the limit ( a lot of physiological changes like shortness of breath , tremor in hands and legs , excess sweating,frequent urination , gastrointestinal reflex , lightness of head etc) u need to immediately need a psychologist.
Next Steps
meet a psychologist.
I don't think u need medicines ( until u develop any physical symptoms )
Health Tips
1. prepare well about the subject u want give exam.
2. sleep well, diaphragmatic breathing, muscle relaxation technique (JPMR). mild to moderate exercise improves performance due release of various hormones (does the similar work of a drug)
3. no stimulants (cigarette , coffee ,tea , alcohol etc.)
4.no spicy food .
all the very best for ur upcoming exam.
need anymore clarification ping me.