 [ Symptoms ] pregnancy i had unprotected sex with my partner on 4th august and got my regular periods by 27th august but after this i missed my cycle for september my cycle is 29 days regular cycle now i did pregnancy test twice and it came out to be negative doctor has prescribed regrestrone 5mg for 5 days can there be any chances of pregnancy still iam worried i have pain and uneasiness in my abdomen [ Disease ] hi this may help you regestrone contains norethisterone a progestogen hormone it can be used to prevent pregnancy normalize the menstrual cycle help correct heavy bleeding and etc learn more http<negative_smiley>­­www medschat com­wiki­norethisterone­ just copy link into google to the www to open and read hope this helps you good luck