NHS GP & Women’s Health Specialist

Dr Sylvia Kama-Kieghe

You’ve decided you need contraception — but the appointment is 10 minutes long, the nurse is clicking through options, and you have no idea what the difference actually is. The pill, the mirena coil, the implant — they all prevent pregnancy, but they work completely differently, suit different women, and come with very different day-to-day realities.

Let me break this down so you can walk into that consultation knowing exactly what to ask for.

Watch First: Birth Control Guide (for Heavy Periods) — How to Find the Best Option for You

There Is No “One Best” Contraceptive

The first thing I want to clear up: there is no universally superior contraceptive. What matters is what’s right for you — your health history, your relationship with your periods, whether you want pregnancy in the near future, and how much daily mental load you’re willing to carry. Your GP or sexual health nurse should be asking about all of these things. If they’re not, you can raise them yourself.

Understanding the Three Categories

Before we compare the pill, the coil, and the implant, it helps to understand the three broad contraceptive categories:

• Short-acting methods — require regular use (daily pill, condoms, diaphragm)
• Long-acting reversible contraception (LARC) — fitted or injected, works for years without you having to think about it (coils, implant, injection)
• Permanent methods — sterilisation (not covered in this post)

Most people weighing up “pill vs coil vs implant” are comparing a short-acting option against two long-acting ones. Let’s go through each.

The Combined Oral Contraceptive Pill (“The Pill”)

The combined pill contains two hormones — oestrogen and progestogen. It works primarily by preventing ovulation.

How you take it: Daily, usually for 21 days followed by a 7-day break. You can also take it continuously (back-to-back packs) to skip periods — this is safe and increasingly recommended.

Effectiveness: Over 99% with perfect use; around 91% with typical use.

Who the combined pill suits well:

• Women who want control over their cycle and period timing
• Women with painful, heavy, or irregular periods (it regulates all of these)
• Women planning pregnancy within the next 1–2 years

Who should think carefully:

• Women over 35 who smoke
• Women with migraines with aura — increased stroke risk
• Women with a history of blood clots (DVT) or clotting disorders
• Women with high blood pressure or certain liver conditions

The Progestogen-Only Pill (“Mini-Pill”)

The progestogen-only pill (POP) works mainly by thickening cervical mucus and — with modern types — suppressing ovulation.

How you take it: Daily, with no break. Most modern POPs (like Desogestrel/Cerazette) have a 12-hour window if you miss a pill — far more forgiving than older versions.

Effectiveness: Over 99% with perfect use.

Who the mini-pill suits well:

• Women who cannot take oestrogen (breastfeeding women, smokers over 35, migraineurs with aura)
• Women who found the combined pill caused mood changes or low libido

Trade-off: Periods can become irregular, lighter, or stop altogether. Some women love this; others find it unsettling. Both responses are completely normal.

The Coil — IUD vs IUS (eg Mirena coil)

Two types. They look similar but work very differently.

About the fitting

Both coils involve a brief pelvic procedure that takes around 5–10 minutes. Cramping during and for a day or two after is normal. It should not be agonising. If you have concerns about pain management, raise this before the appointment — options exist.

Watch Next: Birth Control Concerns Every Woman Has – Finally Answered

The Contraceptive Implant (Nexplanon)

The contraceptive implant is a small, flexible rod — about the size of a matchstick — inserted under the skin of your upper arm. It releases a steady, low dose of etonogestrel (a progestogen) that suppresses ovulation.

Duration: 3 years.

Effectiveness: Over 99% — one of the most effective methods available anywhere in the world.

Insertion: Done under local anaesthetic in clinic. You’ll feel a scratch, nothing more. Removal is equally straightforward.

Who the implant suits well:

• Women who don’t want to think about contraception
• Women who want something discreet
• Breastfeeding women
• Women who struggle to remember a daily pill

Trade-off: Bleeding patterns can be unpredictable, especially in the first 3–6 months — lighter, heavier, more frequent, or stopping entirely. This is the most common reason for removal requests. It does not indicate anything is wrong.

A Note on the Contraceptive Injection (Depo-Provera)

Many women ask about this. The Depo-Provera injection provides 3 months of progestogen contraception. It’s effective, but:

• Fertility can take 12–18 months to return after stopping
• Not recommended for long-term use (over 2 years) due to effects on bone density
• Cannot be “removed” — if you experience side effects, you wait for it to wear off

For most women wanting a low-maintenance method, the coil or implant is preferable.

Quick Comparison: At a Glance

For full NHS guidance on contraceptive options available to you, visit:

NHS: Choosing Contraception

When to Seek Urgent Contraceptive Advice

The Bottom Line

The “best” contraception is the one that fits your life, your body, and your plans — not the one that’s quickest to prescribe.

The coil and the implant are not scary; they’re some of the most effective, low-maintenance options available, and the NHS provides them for free.

If you’ve been on the same method for years without anyone reviewing whether it still suits you, that’s the conversation to start at your next appointment. You get to choose — and you get to change your mind.

Which contraceptive have you tried? Share your experience so other women aren’t navigating this alone. → Join the free AskAwayHealth community

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