Menstrual Induction Injections: Key Questions Answered

Regarding the issue of menstrual induction injections?

Hello doctor, my girlfriend's menstrual cycle is quite regular.
In March, her period was from March 17 to March 23, in April from April 15 to April 21, and in May from May 13 to May 20.
We had intercourse on May 22, and although we used a condom, I pulled out before ejaculation.
Her period was originally expected on June 11, but on June 13 and 14, she used three different brands of pregnancy tests, all showing one line.
On June 15 at 3 PM, she had an abdominal ultrasound which was normal, and she received a menstrual induction injection.
However, as of now, June 18, her period still hasn't arrived.
I would like to ask: 1.
After receiving the menstrual induction injection, does the expected period still take 3 to 5 days to arrive? 2.
How long after the injection should we expect her period to come? 3.
Should I return for a follow-up appointment tomorrow and ask the doctor to perform a blood test or a transvaginal ultrasound?

Xiao Yu, 20~29 year old female. Ask Date: 2017/06/18

Dr. Huang Jianzhong reply Obstetrics and Gynecology

1.
Will getting a menstrual induction injection delay my expected period by a few days? Ans: Yes.

2.
How long after getting the menstrual induction injection will my period come? Ans: 3-7 days.

3.
Should I return for a follow-up appointment tomorrow and ask the doctor for a blood test or a vaginal ultrasound? Ans: Not necessary at this time.

4.
Do I need to ask the doctor for a blood test to check for pregnancy, or is this sufficient? Ans: If your period hasn't arrived by June 29, then see a gynecologist.

Reply Date: 2017/06/18

More Info

Understanding menstrual induction injections and their effects can be crucial for women experiencing irregularities in their menstrual cycles. In your case, it seems that your girlfriend has a regular menstrual cycle, but she has not had her period after receiving an injection intended to induce menstruation. Let’s address your questions one by one.

1. Does the menstrual induction injection mean that the period will take 3-5 days to arrive?
Yes, it is common for menstrual induction injections, such as those containing hormones like progesterone, to take some time to trigger a menstrual period. After administration, it can take anywhere from 3 to 7 days for the period to start. The timing can vary based on individual hormonal responses and the specific medication used. Therefore, if the injection was administered on June 15, it is reasonable to expect that her period could start within a few days to a week.

2. How long after the injection should one expect their period to arrive?
Generally, after receiving a menstrual induction injection, most women can expect their period to start within 3 to 7 days. However, this can vary. Some women may experience a delay, and it is not uncommon for it to take longer, especially if there are underlying hormonal imbalances or other factors affecting the menstrual cycle. If her period does not arrive within a week after the injection, it would be advisable to follow up with her healthcare provider.

3. Should she return for blood tests or a vaginal ultrasound?
Yes, it is a good idea for her to return to her healthcare provider if her period does not start within the expected timeframe. A blood test can help determine if she is pregnant, as home pregnancy tests can sometimes yield false negatives, especially if taken too early. Additionally, a vaginal ultrasound can provide valuable information about the state of her reproductive organs and help identify any potential issues, such as ovarian cysts or other abnormalities that could be affecting her menstrual cycle.

In summary, it is important to remain patient after the administration of a menstrual induction injection, as it can take several days for the period to arrive. If there are any concerns or if her period does not start as expected, returning to the healthcare provider for further evaluation is the best course of action. Regular follow-ups and open communication with her healthcare provider will ensure that any underlying issues are addressed promptly.

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