You must first repent to Allah for leaving an obligatory fast without a valid reason, as this is a major sin.
Then you have to make up the missed days. But if you had intercourse while breaking a day of Ramadan, this is a different story.
You must first repent to Allah for leaving an obligatory fast without a valid reason, as this is a major sin.
Then you have to make up the missed days. But if you had intercourse while breaking a day of Ramadan, this is a different story.