It can be a physiological variation in the second half of your menstrual cycle.
If you continue to feel hot flushes or if new symptoms appear, do get it verified again.
Next Steps
correlate with respect to your menstrual cycle,
also mention any other symptoms even if you feel it's insignificant
take paracetamol for now and have plenty pf fluids
Health Tips
if you feel your palms are sweaty or you feel palpitations,please do report.