Hello
Thank you for your consult at DoctorSpring.com.
Most pill users would feel some kind of pain and cramps as the hormonal effects start showing. This is generally of no concern, and you should not be worried.
She can try taking simple OTC painkillers like Meftal spas twice or thrice a day for 2 - 3 days. Also, a hot water bottle taken to bed will help, as will rest.
If the symptoms are due to the hormonal side effects of the pill, they will pass.
Please tell me in more detail - WHERE exactly is the pain, how severe, any other symptoms such as disturbances in bowel movements or urine pattern, menstrual period history. These would help me to provide a more specific and helpful answer.
Otherwise, if the pain and cramps worsen, she should consult a doctor to rule out - pregnancy related complications / gastroenteritis, urinary tract infection etc.
All the best
Please feel free to discuss further.