Hello,
thanks for using health care magic
i will admit your problem is really a different one. There is no
sign that stays on a man after he has sex. So its not possible
to look at a man and say you had sex or not.
However, there are certain changes that can occur after having
sex such as;
-prolonged time before ejaculation
-poor sexual response
-fatigue
-reduced libido etc.
However, such symptoms could be associated with hunger, poor
psychological preparation, exhaustion etc.
Thyroid diseases are not communicable diseases so if she has thyroid
disease, you do not have to be afraid.
Best regards and hope this helps you
Dr Achuo