He ejaculated in you and feel cramps immediately that lasts for all day?

If you experience immediate and persistent cramps after ejaculation, it's important to seek medical attention as soon as possible. This could indicate an underlying medical condition that requires evaluation by a healthcare professional. Ignoring or self-treating such symptoms can be potentially harmful to your health. It is crucial to consult a medical provider to determine the cause of the cramps and receive appropriate treatment if needed.