The symptoms as mentioned in your post can be due to:
1. Deficiency of certain nutrients like Iron, Vitamin B 12, Calcium, Magnesium
2. Any fluctuation in blood pressure levels.
3. Altered blood sugar levels.
4. Inadequate hydration & nutrition status.
Symptomatic relief can be obtained with nervigenic agents (like Vit B6, B12, Folic acid
) & multivitamin
& mineral supplementation.
Investigations like complete blood count
, serum electrolytes, estimation of ionized calcium, estimation of blood pressure and blood sugar levels will be helpful in clinching the diagnosis.
There is no need to worry, you will be fine.
Meanwhile, maintain adequate hydration, take a healthy balanced diet & avoid stress
Wishing a good health.