What is the ruling on a woman visiting a gynecologist in Ramadan?

A woman is not prevented from visiting a female doctor for examination and check-up, provided that she adheres to the Sharia (definition) regulations regarding the uncovering of 'awrah. An internal uterine examination by hand or by speculum does not invalidate the fast, as detailed in the explanation of things that do not invalidate the fast, such as what enters the vagina, like suppositories, douches, a vaginal speculum, or a finger for medical examination, and what enters the urethra, like a catheter, a scope, or medicine.