Bacterial Vaginosis Pregnancy Complete
Bacterial vaginosis (BV) is a common vaginal condition caused by a change in the natural balance of bacteria, and it affects many pregnant women at some point. It's easily treated, but it's worth understanding the symptoms and why getting it checked matters more in pregnancy than usual.
What Bacterial Vaginosis Is
BV happens when the normal balance of bacteria in the vagina shifts, allowing certain bacteria to overgrow. It isn't a sexually transmitted infection, though sexual activity can influence the vaginal environment. Many women have BV with no symptoms at all, while others notice:
- A thin, watery, grey or white discharge
- A distinctive fishy odour, often more noticeable after sex
- Usually no itching or soreness, which helps distinguish it from thrush
Because symptoms can be mild or absent, BV is sometimes only picked up when a swab is taken for another reason.
Why It Matters More In Pregnancy
Most cases of BV cause no problems, but untreated BV in pregnancy has been linked to a higher chance of premature labour, late miscarriage, and infection after birth. This is why it's worth getting any unusual discharge checked rather than waiting for it to resolve on its own.
Diagnosis And Treatment
- A midwife or GP can usually diagnose BV from your symptoms and a vaginal swab.
- Treatment is typically a course of antibiotics — commonly metronidazole or clindamycin — both of which are considered safe to use in pregnancy.
- It's important to finish the full course even if symptoms clear up early, to reduce the chance of recurrence.
- BV can come back, so mention it again if symptoms return later in pregnancy.
- Simple prevention steps include wearing cotton underwear, avoiding perfumed soaps or douches in the genital area, and not over-washing internally.
When To Get Checked
Any new or unusual vaginal discharge in pregnancy is worth mentioning to your midwife or GP, particularly if it has a strong odour or a different colour or texture than usual. Don't self-diagnose based on internet symptoms alone, as BV, thrush, and other infections can look similar but need different treatments.
Frequently Asked Questions
Is bacterial vaginosis dangerous in pregnancy?
Untreated BV is linked to a higher risk of premature birth and late miscarriage, so it's worth having any symptoms checked promptly. The good news is that it responds well to pregnancy-safe antibiotics and usually clears within about a week of treatment. Your midwife can test for it easily with a simple swab.
Can I treat BV in pregnancy?
Yes, BV is treated with antibiotics that are considered safe throughout pregnancy, most commonly metronidazole or clindamycin. Always get a diagnosis from a healthcare professional first rather than using leftover medication or over-the-counter thrush treatments, since the wrong treatment won't clear BV. Complete the full course as prescribed, even if symptoms improve quickly.
How is BV different from thrush?
BV typically causes a thin, grey, fishy-smelling discharge with little to no itching, while thrush causes a thicker, white, cottage-cheese-like discharge along with itching and soreness. Because they need different treatments, it's best to have a swab test rather than guessing which one you have. Your midwife or GP can confirm the diagnosis quickly.
This article is for informational purposes only and does not constitute medical advice.
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