Fasting

No, it doesn’t but you must not swallow the blood.

You must make up your missed fasts before you fast for Shawaal. https://www.youtube.com/watch?v=w0SiyzMnDSY&feature=youtu.be

This is not accepted! If you are certain that you had fasted the missed days, then you should not open the door to Satan to play with your mind like this. If you are in doubt, you may add a day or two just to be safe, that is fasting them.

That is a great reward and they will be rewarded as them.

If the illness is chronic and there is no possibility of recovering from it, a person should feed one poor person for every day missed. Money can’t be paid directly to the poor as one must feed him and not give him money. It is permissible to give food to one poor person all in […]

You must follow the official religious authorities in your country.

No problem, as long as you don’t swallow any of the water and there isn’t anything that goes against Islam, such as mixing of genders.

According to your position on earth, as your fasting is related to the position of the sun.

As long as you didn’t know and you thought that it was time to break your fast, there is nothing on you.

If done intentionally, this breaks the fast.