Wa alaikum salam, This  would not affect your fasting because it is little and does not  make the fasting person weak.

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Wa alaikumsalam wa rahmatallah wa barakatuhu, If she was a Muslim at the time, she must make up for the days she missed by eating or drinking, a day for a day. But the days she committed Zina, she must fast two consecutive months for every day. Wa iyyakum!

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If doctors say that you will recover and be able to fast, you must not  give Fidyah and you must wait until you recover and able to fast and  make up you r missed days. But if they say that you will never be able to fast, you may feed the  poor in your Muslim country.

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If the period started before magheeb adhan then your fasting is not valid for that day.

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