Abdominal Pulsations: Is It Pregnancy or Something Else?

There is a sensation in the abdomen that feels like a heartbeat for an unknown reason?

I have been taking oral contraceptives, and my period started on the third day after stopping the pills (October 7).
I took a new pack of pills on October 11, and today, October 15, I have not had any sexual intercourse.
Why do I hear a rumbling sound in my abdomen? Am I pregnant? However, I have been taking the contraceptive pills.
Doctor, was the bleeding during my pill-free interval my period? It lasted for three consecutive days, and by the fourth and fifth days, I gradually no longer needed to use sanitary pads.
Since I have been taking the pills for eight months, I understand that the endometrium may become thinner, which can lead to lighter periods.
Thank you, doctor.

Niming, 10~19 year old female. Ask Date: 2019/10/15

Dr. Huang Jianzhong reply Obstetrics and Gynecology

Taking oral contraceptives, my period started on the third day after stopping the medication (October 7).
I began a new pack on October 11, and as of today, October 15, I have not had any sexual intercourse.
Why do I hear a pulsing sound in my abdomen? Answer: It is likely the sound of the aorta pulsing.
Could this mean I am pregnant? Answer: No, you are not pregnant, but I am taking birth control pills.
Doctor, is the bleeding during my break from the pills considered my period? Answer: Yes.
PS: I experienced continuous bleeding for three days, and by the fourth or fifth day, I gradually no longer needed to use sanitary pads.
Since I have been on the pill for eight months, I understand that the endometrium may become thinner, resulting in lighter periods.

Reply Date: 2019/10/15

More Info

Understanding abdominal pulsations can be a source of concern, especially when there are changes in your menstrual cycle and the use of oral contraceptives. Based on your description, it seems you are experiencing abdominal pulsations after stopping your birth control pills, which can be confusing. Let’s break down your situation.

Firstly, the fact that you stopped taking your oral contraceptive and then experienced bleeding shortly after could indicate a withdrawal bleed rather than a true menstrual period. When you stop taking birth control pills, especially after long-term use, your body may react by shedding the uterine lining, which can result in bleeding. This is often lighter than a typical menstrual period and may last for a shorter duration, which aligns with your experience of bleeding for three days and then tapering off.

Regarding the abdominal pulsations you are feeling, it is essential to understand that these sensations can be caused by various factors. In many cases, what you perceive as "pulsations" could be related to normal gastrointestinal activity, such as peristalsis, which is the movement of the intestines as they process food. This can sometimes be felt as a rhythmic sensation in the abdomen, especially if you are more attuned to your body after a change in your hormonal status.

Another possibility is that the pulsations could be related to increased blood flow to the pelvic region, which can occur during the menstrual cycle or after stopping hormonal contraceptives. Hormonal changes can lead to various sensations in the body, including increased sensitivity to normal bodily functions.

It is also important to note that while oral contraceptives are highly effective at preventing pregnancy, they are not 100% foolproof. If you have had unprotected intercourse after stopping the pill, there is a possibility of pregnancy, although you mentioned that you have not engaged in sexual activity since starting the new pack of pills. If you are concerned about the possibility of pregnancy, it would be advisable to take a home pregnancy test for confirmation, especially if your symptoms persist or if you experience any additional signs of pregnancy, such as nausea or breast tenderness.

If the pulsations are accompanied by pain, significant discomfort, or any unusual symptoms, it would be wise to consult a healthcare provider. They can perform a physical examination and possibly an ultrasound to rule out any underlying issues, such as ovarian cysts or other abdominal conditions.

In summary, the abdominal pulsations you are experiencing could be related to normal physiological changes following the cessation of birth control pills, gastrointestinal activity, or increased blood flow. The bleeding you experienced after stopping the pills is likely a withdrawal bleed rather than a true menstrual period. If you have any doubts about your pregnancy status or if your symptoms change, seeking medical advice is always a prudent step.

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