Menstrual Induction: When to Expect Your Period After Injection - Obstetrics and Gynecology

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When it comes to menstrual induction and understanding the timing of your period after receiving an injection, there are several factors to consider. Based on your provided information, you had your last menstrual period from August 7 to August 13, with an average cycle length of 31 days. You also mentioned having sexual intercourse on August 15 and August 27, and a pregnancy test on September 14 that returned negative results. An ultrasound indicated that your uterine lining was thickening, which can be a sign that your body is preparing for menstruation.

In general, the timing of your period after receiving a menstrual induction injection can vary based on the type of medication used. Commonly used medications for inducing menstruation include progestins, which are synthetic forms of the hormone progesterone. After receiving such an injection, many women can expect their period to start within a few days to a couple of weeks. However, individual responses can vary significantly. Some women may experience their period within 3 to 7 days after the injection, while others may take longer.

Given that your last menstrual period was in early August and considering your average cycle length, it is reasonable to expect your period to arrive around early September. However, since you received an injection to induce menstruation, it is essential to monitor your body’s response. If you do not see your period within a week or two after the injection, it may be advisable to consult your healthcare provider for further evaluation.

Regarding your question about the need for a pregnancy test, since you had a negative result on September 14 and your ultrasound showed a thickened uterine lining, it is less likely that you are pregnant. However, if you have any concerns or if your period does not arrive as expected, it may be prudent to take another pregnancy test or consult with your healthcare provider. They can provide you with more personalized advice based on your medical history and current situation.

In summary, after receiving a menstrual induction injection, you can generally expect your period to arrive within a few days to a couple of weeks. If your period does not come as anticipated, or if you have any concerns about potential pregnancy, it is best to follow up with your healthcare provider for further guidance. They can help you understand your specific situation better and determine if any additional tests or treatments are necessary.