Ramadhaan & Fasting

Q: As I am fasting I thought the last time for sehri was 3:50am (mistakenly) but the actual last time for sehri was 3:49am. I drank water at 3:50am sharp. Would my fast be valid?

Q: A small amount of water (approximately 2-3 drops) remains in my mouth after I gargle. If I swallow this water mistakenly during fasting, will my fast break? Will it break my fast if I swallow it knowingly?

Q: Can one fast the 6 days of Shawwal as your fard days that you have to pay in together or must it be separate?

Q: Do I have to discharge fitrah of the previous years if I had discharged it on behalf of my baaligh children and my wife without their making me a wakeel for them or asking me to pay it? It was known to some of them that I pay their fitrah every year.

Q: What is the authenticity of sitta Shawwal (the six days fasting after Ramadhaan)?

Q:

1. Does the fast break if a person does a saline nasal rinse/nasal irrigation whilst fasting. The salt solution goes up one nostril and out the other. Sometimes the solution comes out the mouth as well.

2. If a person didn't know the masalah and did it whilst fasting, will their fast break?

Q: Do the Ramadhaan qadha fasts have to be made up in a continous manner?

Q: Will my fast during Ramadhaan break if water enters the anus while cleaning after defecating and sometime even reaching the stomach via the anus? Do I have to fast again or not?

Q: I know that kaffaarah fasts have to be kept consecutively, with no break in between. My question is that if a female has to keep kaffaarah fasts, then how will she keep them consecutively, taking into consideration that her haidh will come between the fasts?

Q: During fasting, I got a severe headache (while traveling) and vomited 3 hours before iftar. I tried to take some pills but didn’t take anything and went to sleep. I woke up about 15 mins after the Maghrib Adhan and did iftar. Is my fast is valid?