Ruling on not fasting for someone who has to take medicine every 12 hours

If a woman fasts when she is pregnant and is bleeding

She suffered a brain injury at birth; does she have to pray and fast?

He did not fast and he fed the poor because of chronic sickness, then Allah healed him

Amount of fidyah to be paid by one who is unable to fast because of old age or sickness

She could not find a poor person to feed instead of fasting in Ramadaan – should she give the money in charity?

He has tuberculosis and is unable to fast

The doctors told him never to fast, then he recovered five years later

He is suffering from bleeding and blot clots in the brain – does he have to fast?

He has a stomach ulcer and the doctors have advised him not to fast