Thanks for writing to health care magic.
Do you have any other complaints like frequent passage of stool or palpitations etc. Do you have any weight loss? Do you have any other complaints associated? Did you monitor your temperature properly. Is it 39 degrees always?
I think you should be investigated further to rule out problems like hyperthyroidism
Please consult your doctor who after confirm your temperature will investigate further depending on the physical examination findings.
Hope this helps.