Hello Amrutha,
As per your symptoms it looks like
thyroid disorder, we should rule it out first. Also, differential diagnosis may be migraine, Anaemia.
Hope it will help you.
Next Steps
kindly go for these investigation
TSH, FT3, FT4, CBC , peripheral smear
Health Tips
Also look out for your weight and menstrual cycles, if any significant change in last couple of months.