After taking Regestrone (norethisterone) 15 mg for 5 days, it is common to have withdrawal bleeding a few days later due to the drop in hormone levels, and since your period was normal and lasted about a week, that part is expected; the mild discomfort or pain you are noticing now may be related to the ovulation phase or simply your body adjusting after the hormonal change, as some women experience cramps, bloating, or pelvic discomfort around ovulation, which is usually harmless; however, if the pain is severe, persistent, worsening, or associated with heavy bleeding, unusual discharge, fever, dizziness, or sharp pain on one side, you should consult a gynecologist for proper evaluation, especially if Regestrone was prescribed for irregular cycles or another menstrual issue, as follow‑up is important to ensure safe management.