Factors that break and don't break the fast

Q: Someone burps and feels like reflux will reach his mouth but he swollows before it can reach, does the fast break?

Q: In the state of Ramadan should I avoid gargle and sniff water in to the nose in major impurity?

Q: A person forgetfully drinks water in Ramadan. While drinking water he suddenly remembers that he is fasting. He stops drinking water but while he was remembering that he is fasting he might have drank a little water. That means he drinks a little water remembering that he is fasting, but he did not have any intention to break the fast. He then continues the rest of the day fasting. Is his fasting valid?

Q: A girl didn’t know that having intercourse pleasure by doing it herself (without anyone else) is not allowed while fasting in Ramadhaan so she did it by mistake while she was fasting in Ramadhaan. Now what is her kaffaara?

Q: I have started qadha fasting of my previous fasts which I did not make up in time. Today accidentally in morning I forgot that I am fasting and talking to my friend she offered me sweet and savoury and I tasted some of both. I did not even remember after sometime that I was fasting when during conversation I told her I am fasting nowadays and realised that I was fasting and have eaten by mistake. I know in Ramadan you can continue the fast but I don't know if it applies to qaza roza as well. Please tell me if my fast is valid or do I have to do anything else?

Q:

1. While fasting, if a person takes a bath then, will the water entering the ears break the fast?

2. During wudhu, while doing the masah of ears, when we put our finger in the ear, will the water entering our ear break the fast?

3. After bathing will the use of deodarant (both spray and roll on) break the fast? Because it is said that the pores of the skin are open after bathing and the deodrant enters the pores thats how the smell comes when we sweat. 

Q: If the lady has periods during fast, what should she do?

Q: What is the condition of my fast if I masturbate without knowing that it is haram? This happened when I was 12 years old?

Q: I have two questions:

1. During Ramadaan, while fasting I had a terrible migraine. I applied Makkah oil (green box medicine) on my forehead. Would the smell break my fast?

2. In Ramadhaan, while fasting I was in Australia. I had a running nose and used something like a Vicks scented tissue. I didn't know it was scented. Then I was confused where the smell came from so I blew my nose again. Only then I realized it was from the tissue. I think I could feel the smell going down in my nose. Is my roza accepted or must I make qadha?

Q: As I have vaginal discharge all the time, when I shower I insert my finger right inside the vagina to clean the excess discharge. Does this break my fast?