Missed Period: PMS or Pregnancy? Your Symptoms - Obstetrics and Gynecology

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Menstrual delay


Last month, my period came a week early and lasted for a full 7 days, mostly presenting as brown discharge with some fresh blood.
This month, it hasn't arrived yet.
Two weeks ago, I had protected intercourse with no breakage.
Recently, I've been experiencing bloating and constipation, but no other unusual symptoms.
Could this be premenstrual syndrome, or could I be pregnant?

Niming, 20~29 year old female. Ask Date: 2019/10/23

Dr. Huang Jianzhong reply Obstetrics and Gynecology


Last month, my period came a week early and lasted for a full 7 days, mostly presenting as brown discharge with some fresh blood.
This month, it hasn't started yet.
Two weeks ago, I had protected intercourse with no breakage.
Recently, I've been experiencing bloating and constipation, but no other abnormalities.
Could this be premenstrual syndrome, or am I pregnant? Answer: Since your period hasn't started this month, it's advisable to take a pregnancy test.
It is likely premenstrual syndrome rather than pregnancy.

Reply Date: 2019/10/23

More Info


When it comes to missed periods, distinguishing between premenstrual syndrome (PMS) and pregnancy can be challenging, especially when symptoms overlap. Based on your description, let's break down the potential causes of your missed period and the symptoms you're experiencing.

Firstly, it's important to note that menstrual cycles can be influenced by a variety of factors, including stress, hormonal imbalances, changes in weight, and lifestyle factors. A shift in your menstrual cycle, such as your period arriving a week early last month and now being late this month, can be indicative of several underlying issues.

The presence of brown discharge, which you mentioned occurred for seven days last month, is often associated with old blood leaving the body. This can happen at the beginning or end of a menstrual cycle and is generally not a cause for concern. However, if this brown discharge was accompanied by fresh blood, it could indicate a lighter period or spotting, which can occur for various reasons, including hormonal fluctuations or even early pregnancy.

Regarding your current situation, where your period is late by a month and you have experienced symptoms such as bloating and constipation, these could be signs of PMS or early pregnancy. PMS typically includes symptoms like mood swings, breast tenderness, bloating, and changes in appetite, which can also mimic early pregnancy symptoms. However, pregnancy symptoms can include missed periods, nausea, breast changes, and increased urination, among others.

Since you mentioned that you engaged in protected intercourse two weeks ago, the likelihood of pregnancy is lower, especially if the condom did not break. However, no contraceptive method is 100% effective, and if there was any chance of sperm exposure, it is prudent to consider pregnancy as a possibility.

To clarify your situation, I recommend taking a home pregnancy test. These tests are designed to detect the hormone hCG (human chorionic gonadotropin), which is produced during pregnancy. For the most accurate results, it’s best to take the test after your missed period. If the test is positive, you should schedule an appointment with your healthcare provider for further evaluation and to confirm the pregnancy.

If the test is negative and your period still does not arrive, it would be wise to consult with a healthcare professional. They can perform a blood test to check for pregnancy and evaluate other potential causes for your missed period, such as hormonal imbalances or other medical conditions.

In summary, while your symptoms could suggest either PMS or early pregnancy, the best course of action is to take a pregnancy test. If you have any concerns or if your symptoms worsen, do not hesitate to seek medical advice. Understanding your body and its signals is crucial, and a healthcare provider can offer personalized guidance based on your specific situation.

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