Pre-menstrual pain and fasting

I am a young woman, twenty years old. I got pre-menstrual pains during
Ramadan before Zuhr prayer; it was so badthat I could not stand up to
pray, and even when I was sitting I could not pray. But I did not get
my period until five minutes before the adhaan for Maghrib. Please
note that I continued fasting throughout the day. Is it permissible
for me to make up this day or am I regarded as having fastedit?.
Praise be to Allaah.
If the period began and blood appeared before the sun set, you should
regard yourself as having broken the fast, and you have to make up
this day. But the pains that appeared before that do not invalidate
the fast. Pain due to the fact that menstruation is close at hand does
not invalidate the fast. So if the pain continued but there was no
bleeding until the sun set, then the fast is valid and you do not have
to make up this day.
But if bleeding starts before the sun sets, even if it is only five
minutes before, then this fast is invalidated and you have to make it
up. This is the shar'i ruling as far as we know. With regard to the
pains, there are medicinesand treatments for that; you should ask
doctors, and perhaps you will find with them that will relieve you of
this pain you are feeling.
End quote.
Shaykh 'Abd al-'Azeez ibn Baaz (may Allah have mercy on him)
Fataawa Noor 'ala al-Darb,