What is the ruling on a fasting person who induced vomiting intentionally and the vomit filled the mouth?

A woman has had her period like this for 15 years, and her period before that was irregular? That is, for 15 years, her cycle comes for 14 days, being light at the beginning and end, and intensifying in the five middle days? She asks when to consider it as irregular bleeding, and when to consider it as menstruation? She also asks if she has to make up for missed prayers and fasting? She says that she used to consider the 14 days as menstruation based on the fatwa of the Shafi'is, and they say that menstruation lasts 15 days. Now she is confused about how to calculate menstruation, should she make up for what she missed or stick to the fatwa of the Shafi'is in this matter?

What is the ruling on a fasting person who vomits less than the fullness of the mouth and then vomits again on their own?

I gave birth 51 days ago, and during the forty days, the bleeding was light and intermittent. I performed ablution and prayed, and then a week later, I had bleeding for one day. When can I pray again?

What is the ruling on a fasting person who vomited less than the mouthful and then intentionally brought up the vomit?

What is the ruling on music used in advertisements? And what is the ruling on taking money for it?

What is the criterion for invalidating fasting?

Is it permissible to have intercourse if the menstrual signs appear?

What is the criteria for breaking the fast in food, drink, and healing?