Can my partner give me the injections?

Yes, many partners learn to give the injections during the teaching session and take this on through the cycle. It's entirely a personal choice whether you prefer to self-inject or have someone else do it.

Do the injections hurt more over time?

Not usually because of the injections themselves, but ongoing bruising or soreness in one area can build up if you don't rotate sites. Switching between the tummy and thigh, and between left and right, can help.

What if I forget a dose or inject at the wrong time?

Contact your clinic as soon as you realise. They can advise on next steps based on the specific medication and how late the dose was, rather than trying to work it out yourself.

Will I definitely get bloated?

Bloating is common but the extent varies a lot between individuals, partly linked to how many follicles are developing. Your clinic can tell you if what you're feeling seems within the expected range for your monitoring results.

IVF injections: what actually happens

Written by Zayn Miah & R KhanomLast updated 17 September 2026Not clinically reviewed

Short answer: IVF injections are usually given once or twice a day, just under the skin of the tummy or thigh, over roughly 8 to 14 days, to stimulate the ovaries and later trigger final egg maturation. Most people learn to give them at home after a nurse demonstration. Side effects like bloating, mood changes and bruising are common, and your clinic will show you exactly how and when to use them.

What the injections are for

Different injections do different jobs during a cycle. Some suppress your natural hormones so the clinic can control timing, some stimulate the ovaries to grow multiple follicles, and one final trigger injection matures the eggs ready for collection. Your clinic will give you a written schedule specific to your protocol.

Learning to inject yourself

Most clinics run a teaching session, in person or by video, showing you how to draw up and give the medication. Many injections now come in pre-filled pens, which some people find easier than vials and needles. It's completely normal to feel nervous the first few times.

Where injections are usually given

Most stimulation and suppression medications are injected subcutaneously, meaning just under the skin, commonly in the lower tummy or the top of the thigh. Rotating the injection site helps reduce soreness and bruising.

What it physically feels like

Most people describe a brief sting rather than significant pain. Some medications sting more than others depending on their formulation. Bruising, redness or a small lump at the injection site is common and usually settles within a few days.

How the injections affect your body

Bloating and abdominal discomfort as the ovaries enlarge with growing follicles.
Mood changes, which many people find one of the harder side effects to manage.
Headaches or tiredness, particularly during the first few days.
Tenderness around the ovaries, especially as stimulation progresses.

Contact your clinic promptly if you have severe abdominal pain, significant bloating, nausea or vomiting, or difficulty breathing during stimulation. These can be signs of ovarian hyperstimulation syndrome (OHSS) and need medical assessment rather than waiting it out.

The trigger injection is different

Unlike the daily stimulation injections, the trigger shot is a single, precisely timed dose that causes final egg maturation. It's usually given at an exact time in the evening, roughly 36 hours before egg retrieval, and the clinic will stress the importance of timing this correctly.

Practical tips people find useful

Keep medication refrigerated if instructed, and check the packaging each time.
Set phone alarms for injection times, especially the trigger shot.
Sharps bins are usually provided by the clinic or pharmacy for safe disposal.
Warming the injection to room temperature briefly can reduce stinging for some medications.

When to call the clinic

Beyond the OHSS warning signs above, contact your clinic if you're unsure about a dose, miss a dose, or notice unusual swelling or infection at an injection site. It's always better to ask than to guess.

Questions people ask next

Can my partner give me the injections?: Yes, many partners learn to give the injections during the teaching session and take this on through the cycle. It's entirely a personal choice whether you prefer to self-inject or have someone else do it.
Do the injections hurt more over time?: Not usually because of the injections themselves, but ongoing bruising or soreness in one area can build up if you don't rotate sites. Switching between the tummy and thigh, and between left and right, can help.
What if I forget a dose or inject at the wrong time?: Contact your clinic as soon as you realise. They can advise on next steps based on the specific medication and how late the dose was, rather than trying to work it out yourself.
Will I definitely get bloated?: Bloating is common but the extent varies a lot between individuals, partly linked to how many follicles are developing. Your clinic can tell you if what you're feeling seems within the expected range for your monitoring results.

Words on this page

Sources

IVF: what is IVF and how does it work?, HFEA (UK fertility regulator). Link checked 17 September 2026.
IVF overview, NHS. Link checked 17 September 2026.
Patient information leaflets and product characteristics, electronic medicines compendium (emc). Link checked 17 September 2026.

Written by patients, not clinicians. This page has not yet been reviewed by a named fertility professional, so it explains published guidance and points you to the original source instead of giving medical advice. It is not medical advice. Decisions about your treatment belong with your own clinic. Read our editorial policy and corrections policy.