Regestrone (Norethisterone 5mg) is a synthetic hormone used to delay periods or treat menstrual irregularities. Taking it can affect your menstrual cycle, causing changes like early or delayed bleeding, lighter or spotting-type flow. Having a period on 12th December with light flow after taking the tablets on 4th-6th December can be a normal response to the medication. The stopping of periods on 18th December followed by light spotting and then another period on 7th January also fits within possible hormonal effects of norethisterone.

• These changes occur because norethisterone influences hormone levels that regulate the menstrual cycle.
• Light spotting between periods is common when using this medication.
• If bleeding becomes very irregular, prolonged, or is accompanied by pain or heavy bleeding, it is important to see a gynecologist for further evaluation.

If you want, I can explain how norethisterone works in more detail. For personalized advice and to ensure your cycle is healthy, please consult a gynecologist. In case of severe symptoms, seek immediate medical attention.

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