Pregnancy Chances with Irregular Cycles and PCOS

Probability of Pregnancy

The menstrual period was from March 6 to March 18, with a cycle that varies approximately between 28 to 36 days.
In the past, a gynecologist mentioned the possibility of polycystic ovary syndrome.
There was sexual intercourse on March 16 and March 23, both times with condom use and withdrawal.
What is the likelihood of pregnancy? If concerned, when can a pregnancy test be taken? Can the next menstrual period be predicted?

123, 20~29 year old female. Ask Date: 2019/04/01

Dr. Huang Jianzhong reply Obstetrics and Gynecology

Menstrual period from March 6 to March 18, with a cycle that varies approximately between 28 to 36 days.
Previously diagnosed with polycystic ovary syndrome by a gynecologist.
Engaged in sexual intercourse on March 16 and March 23, both times using condoms with external ejaculation.
What is the likelihood of pregnancy? Answer: The likelihood of pregnancy is low.
If concerned, when can a pregnancy test be taken? Answer: April 8 or April 15.
Can the next menstrual period be calculated based on this? Answer: ?

Reply Date: 2019/04/01

More Info

When considering the chances of pregnancy with irregular menstrual cycles and a history of polycystic ovary syndrome (PCOS), several factors come into play. PCOS is a common hormonal disorder that can affect ovulation, leading to irregular menstrual cycles and potentially impacting fertility. Women with PCOS may experience anovulation (lack of ovulation), which can make it more challenging to conceive.

In your case, you mentioned having irregular cycles that range from 28 to 36 days, which is not uncommon for someone with PCOS. The timing of ovulation can vary significantly, making it difficult to predict the fertile window accurately. Generally, ovulation occurs about 14 days before the start of your next period. However, with irregular cycles, pinpointing this can be tricky.

You had sexual intercourse on March 16 and March 23, and you are concerned about the likelihood of pregnancy. If you were using condoms and they were used correctly, the risk of pregnancy is significantly reduced, but no contraceptive method is 100% effective. If you are worried about the possibility of being pregnant, you can take a home pregnancy test. Most home pregnancy tests are reliable about a week after a missed period. Given your cycle length, if your next period is expected around April 6 to April 18, you could consider testing around that time for the most accurate result.

If your cycles are irregular and you find it challenging to track ovulation, you might want to consider using ovulation predictor kits (OPKs) or tracking basal body temperature (BBT) to better understand your ovulation patterns. These methods can help you identify your fertile window more accurately.

Additionally, if you are actively trying to conceive and have concerns about your menstrual irregularities or PCOS, it may be beneficial to consult with a healthcare provider or a fertility specialist. They can provide personalized advice and may suggest treatments to help regulate your cycles and improve your chances of conception.

In summary, while the chances of pregnancy exist, especially if contraception was not used effectively, the irregularity of your cycles and the presence of PCOS can complicate matters. Monitoring your cycle, using pregnancy tests at the appropriate time, and consulting with a healthcare provider can provide clarity and guidance as you navigate this process.

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