Hi, welcome to our site. I am Dr Saumya Mittal.

Read your query. That is a very significant question and i appreciate your problem. I will try my best to answer your query

Unfortunately you have not mentioned the site where the temperature was taken. You see the skin temperature can be quite inaccurate. It is usually lower than the core body temperature. And is easily influenced by the room temperature conditions and winds. So if the surroundings are cool, the skin temperature is likely to be low.

I am also assuming, since your query is silent about it, that you do not have any symptoms in association with this low temperature. So I would have asked a patient who had come to visit me in my clinic to relax.

Yes I agree with your doctor. Thyroid should be tested. I would go a bit further and suggest checking sugars and Vitamin D as well.

I hope this helps you. Inform the reports mentioned above so i can be of help further. Best of luck.

I have given you the answer to the maximum considering the information provided. The results of the tests could further enhance my answer to you.

Please do understand that some details could be extracted from a detailed history and examination.

Looking forward to your return query with the details asked so that I can help you further. Please feel free to ask another query. Would be glad to help you.
(If the answer has helped you, please indicate this)