If you accidentally prayed while thinking your period was over but it turned out not to be, don't worry. In Islam, this situation is known as "istihada," which refers to irregular bleeding outside of the menstrual period. Here's what you should do:
Stop the prayer: As soon as you realize that you are experiencing menstrual bleeding or irregular bleeding (istihada), you should stop praying immediately.
Perform ablution (Wudu): After discovering the bleeding, perform ablution (Wudu) to ensure you are in a state of ritual purity.
Make up the missed prayers: Once your period or irregular bleeding ends, you must make up for the prayers that you missed during that time. Menstruation or irregular bleeding excuses you from performing the prayers, but you are required to make up for them afterward.
Seek forgiveness: It's essential to seek forgiveness from Allah for any unintentional mistakes you might have made during your prayers. Allah is merciful and forgiving to those who sincerely seek forgiveness.
Be mindful in the future: Pay closer attention to your menstrual cycle and any irregular bleeding to avoid similar situations in the future. Keeping track of your cycle can help you plan your prayers accordingly.
Remember, Islam acknowledges that human beings can make mistakes, and Allah is compassionate and understanding. Seek His forgiveness, learn from the experience, and strive to be more mindful in the future. If you have any further doubts or concerns, consider reaching out to a knowledgeable Islamic scholar or a trusted religious authority for guidance specific to your situation.