Can Bacterial Vaginosis Prevent Conception or Cause Miscarriage?

Bacterial Vaginosis (BV) is one of the most common vaginal infections, yet the impact is not limited to experiencing discomfort. You may be asking yourself whether BV can cause pregnancy or miscarriage. In this post, you will find out how BV impacts your reproductive health, can cause a delay in conception, and what risks it presents during pregnancy.

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Whether you want to become pregnant or are already pregnant, any health issue is alarming, and something as personal and disorienting as Bacterial Vaginosis (BV) can be defined as nerve-wracking. You might have heard people discussing BV and how this may affect fertility and pregnancy, and you would want straightforward answers.We are going to break down the facts for you, so you understand better what BV is, how it works in your body, and whether it can prevent your pregnancy or result in a miscarriage.

What is Bacterial Vaginosis (BV)?

BV is an infection of the vagina as a result of a change in the normal bacteria present in the vagina. Typically, your vagina is a combination of beneficial and harmful bacteria. However, excessive growth of bad bacteria may disrupt the equilibrium, resulting in BV.
You might notice:
  • A thin, grey, or white discharge.
  • A fishy smell, especially after sex.
  • Itching or irritation (though not always).

Some women experience no symptoms at all. But even if you’re symptom-free, BV can still affect your reproductive health.

Can BV Prevent You from Conceiving?

It is a question that many women ask, especially when they realise that they have been actively trying to conceive without any success in recent years.
The thing is that BV does not prevent pregnancy, but in some cases, BV makes it more difficult.
Here’s how:
  1. BV affects sperm movement: When you have BV, the vaginal environment becomes less friendly for sperm. The increased harmful bacteria and pH imbalance can harm sperm or make it difficult for them to reach the egg.
  2. Increased risk of Pelvic Inflammatory Disease (PID): If BV isn’t treated, the bacteria may travel up into your uterus and fallopian tubes. This can cause PID, which can lead to scarring and blockages in the fallopian tubes, making it harder for the egg and sperm to meet.
  3. IVF success may be lower: If you’re undergoing fertility treatments like IVF, BV may reduce your chances of success. Some studies suggest that women with untreated BV may have lower implantation rates.

So while BV may not be the direct cause of infertility, it creates hurdles in your journey to conception.


Does BV Increase the Risk of Miscarriage?

If you’re already pregnant, you need to be extra cautious. BV during pregnancy can lead to complications, especially if left untreated.
Yes, BV has been linked to a higher risk of miscarriage, particularly in early pregnancy. Here's why:
  • BV can trigger inflammation: The infection can cause inflammation in your uterus and cervix. In some cases, this can interfere with the early stages of pregnancy and lead to loss.
  • BV can lead to preterm labour: BV is also linked to premature rupture of membranes and preterm birth, which increases the chances of miscarriage or a baby being born too early to survive.
  • Risk of infection in the womb: BV bacteria can sometimes move up into the uterus, causing infections in the amniotic fluid or placenta. This could threaten the health of both you and your baby.
That said, not every case of BV leads to miscarriage, but the risk is higher, especially if the infection is untreated during the first trimester.

What Should You Do If You Suspect BV?

If you’re trying to conceive or are already pregnant and notice signs of BV, or even if you don’t have symptoms but feel something’s off, it’s essential to talk to a doctor.
Here’s what you should consider doing:
  • Get checked: BV can be diagnosed with a simple pelvic exam and lab test. It’s better to get clarity than to keep wondering.
  • Complete the treatment: BV is usually treated with antibiotics. Ensure you complete the full course, even if symptoms subside early.
  • Avoid douching: Douching can upset your vaginal balance even more. It’s best to avoid it altogether.
  • Practice safe sex: BV is not an STI, but having multiple partners or unprotected sex increases your risk. Safe sex practices help maintain vaginal health.
  • Monitor during pregnancy: If you’re pregnant, your doctor may suggest screening for BV, especially if you have a history of premature births or miscarriage.

Can BV Come Back?

Unfortunately, yes. BV has a high recurrence rate. You may feel better after treatment, but it can come back, sometimes within weeks.
To reduce your risk:
  • Maintain hygiene, but don’t over-clean your vagina.
  • Stick to cotton underwear.
  • Avoid scented soaps and vaginal sprays.
  • Limit sexual partners and use protection.
  • Follow up with your doctor if symptoms return.

By taking early action, you protect your chances of a healthy pregnancy and reduce the risk of complications.
Bacterial Vaginosis might seem like a minor issue, but when you’re focused on becoming a mother, even the most minor health problem matters. While BV doesn’t always cause infertility or miscarriage, it can increase your risks, especially if left untreated.
The best thing you can do is stay informed, listen to your body, and get medical advice early. Whether you’re trying to conceive or already expecting, keeping your vaginal health in check is an essential step toward your goal of a healthy pregnancy.

FAQs on Can BV Prevent Conception or Cause Miscarriage?

  1. Can I still conceive if I have BV?
    Yes, you can. BV doesn’t always stop pregnancy, but it may make it harder by affecting sperm health or increasing the risk of other complications. Treating it early improves your chances.
  2. Is BV dangerous during early pregnancy?
    Yes, BV in early pregnancy can increase the chances of miscarriage or preterm labour. If you suspect BV, seek treatment promptly to minimise the risk.
  3. Can BV go away on its own?
    In some mild cases, it may resolve on its own, but this is not guaranteed. It’s always safer to consult a doctor and complete the prescribed treatment to prevent future issues.
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