Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
At age 13 it would be advisable to do thyroid assessment. Some times bith hypothyroidism
can lead to such hot flushes.
Also a complete blood count
should be useful as anemia
can also have this presentation.
There is no need to panic and things will be simple.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.