If you’ve had unprotected sex and are wondering whether Plan B works during ovulation, you’re not alone. This is one of the most searched questions about emergency contraception — and for good reason. Timing matters a lot when it comes to how well the morning-after pill works.
Let’s break it down in simple terms.
1. How Plan B Works
Plan B pills like Victoria OneStep work mainly by preventing or delaying ovulation — the release of an egg from your ovary.
If there’s no egg released, sperm has nothing to fertilize, which prevents pregnancy before it even starts.
However, if you’ve already ovulated, Plan B may not be as effective — because it can’t stop an egg that’s already been released.
2. What Happens If You’re Already Ovulating
If you’ve already ovulated when you take Plan B, it might not work as intended.
At this point, the egg could already be in your fallopian tube waiting to be fertilized — and levonorgestrel (the ingredient in Victoria OneStep) can’t prevent fertilization or implantation once ovulation has begun.
That’s why timing is critical — the closer you are to ovulation, the less likely Plan B is to work effectively.
3. When EllaOne or Mifestad May Be Better Options
If you’re already close to ovulation or unsure of your timing, a different pill such as EllaOne or Mifestad may be more effective.
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EllaOne (Ulipristal Acetate 30mg) works up to 5 days after sex and can still help even if ovulation has already started. It blocks progesterone — the hormone needed to release or fertilize an egg.
Shop EllaOne here. -
Mifestad 10 (Mifepristone 10mg) can also be used up to 120 hours (5 days) after unprotected sex and works even if you’re already ovulating.
Shop Mifestad here.
If you’re not sure when you ovulated, these two are generally safer and more reliable options.
4. How to Know If You’re Ovulating
Here are a few common signs of ovulation:
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Clear, stretchy discharge (like egg whites)
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Slight lower abdominal cramping or tenderness
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A small rise in basal body temperature
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Mild bloating or breast tenderness
If you notice these symptoms and had unprotected sex around that time, Plan B may not be enough — go for EllaOne or Mifestad instead.
5. Key Takeaway
Plan B (Victoria OneStep) is best if you take it before ovulation — ideally within 72 hours.
If you’ve already ovulated or you’re unsure, EllaOne or Mifestad can offer stronger, more reliable protection.
Emergency contraception works best when taken as soon as possible. Don’t wait — the earlier you act, the higher the effectiveness.