If you’re having difficulty conceiving, your doctor may recommend starting your fertility treatment with timed intercourse or IUI. Understanding the difference between these two treatment strategies can help you choose the best option for your fertility needs.

If you’re having difficulty conceiving, your doctor may recommend starting your fertility treatment with timed intercourse or IUI. Understanding the difference between these two treatment strategies can help you choose the best option for your fertility needs.
If you’re having trouble getting pregnant, you may find yourself exploring different fertility treatment options.
Two options that many consider first are timed intercourse and IUI. What are these strategies, and will they help you conceive?
Read on to learn about timed intercourse vs. IUI, including how the two treatments work, which may be best for you, and how tracking your hormones during treatment may help you along your fertility journey.
Timed intercourse vs. IUI: What are these treatments?
Timed intercourse and IUI are two fertility treatment strategies aimed at helping you conceive when faced with infertility.
With timed intercourse, you and your partner time sex to the moment of ovulation, typically after medically inducing it. By correctly timing intercourse, the goal is to boost the chances of sperm fertilizing the ovulated egg—and that, of course, maximizes your chances of getting pregnant.
With IUI (intrauterine insemination), sperm is manually injected into the uterus after inducing ovulation. Directly injecting sperm is intended to help the sperm successfully make it to the egg, so it can fertilize the egg and you can become pregnant.
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Timed intercourse vs. IUI: What are the treatment processes?
When comparing timed intercourse vs. IUI, it’s helpful to understand that the two methods start off similarly but differ once sperm enters the equation.
Let’s take a closer look at how both treatments work.
How does timed intercourse work?
If you try timed intercourse for help conceiving, the process generally goes like this:
- Ovarian stimulation
- Ovulation induction
- Intercourse
First up is ovarian stimulation. This step relies on ovulation-boosting medication to help your body produce eggs. That way, you can be sure that you successfully ovulate and an egg will be available for fertilization.
Once your doctor determines the egg is mature (or eggs, plural), it’s time for the next step: ovulation induction. Ovulation is induced using another medication.
Now that you’ve ovulated and an egg is in your fallopian tubes, the moment has come for intercourse. Timing vaginal sex to ovulation helps you increase the chances that sperm will fertilize the egg and you’ll conceive.
For some people, medically triggering ovulation once the egg is mature isn’t necessary (though this is rare). If this is the case for you, your doctor may recommend tracking your hormones to detect ovulation and accurately time intercourse yourself. Consider using a multi-hormone ovulation kit for hormone monitoring, as this tool is one of the best ways to track ovulation at home.
How does IUI work?
IUI is an assisted reproductive technology (ART) procedure. If you use IUI to help you conceive, your treatment journey typically follows these steps:
- Ovarian stimulation
- Ovulation induction
- Insemination (sperm injection)
IUI also generally starts with ovarian stimulation, using medication to help your body produce eggs. Your doctor monitors your progress to determine when the eggs are ready and it’s time for ovulation.
Then, your doctor medically induces ovulation, making your ovaries release the mature egg.
This next step is where these two fertility treatments differ. Whereas sperm enters your body the old-fashioned way with timed intercourse, IUI uses insemination.
During insemination, your doctor injects sperm directly into your uterus, typically around 24 to 48 hours after triggering ovulation. This makes the journey to the egg easier, boosting the chances of successful fertilization and a positive pregnancy test.
Timed intercourse vs. IUI: Which is right for me?
So, what will help you conceive, timed intercourse or IUI? That depends on you.
Weighing fertility treatment with timed intercourse vs. IUI is a personal decision, influenced by factors like:
- Treatment cost, your finances, and any potential insurance coverage
- How long you’ve been trying to conceive
- Sperm availability and quality
- Your age
The choice between timed intercourse vs. IUI also depends on your specific infertility diagnosis. Here are some scenarios where each fertility treatment could help you get pregnant.
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Is timed intercourse right for me?
Timed intercourse requires fertility medication but no additional procedures, making it among the least expensive and least invasive fertility treatments.
This strategy can be a great starting point when you’re having trouble getting pregnant.
Timed intercourse may help you conceive if:
- Your doctor hasn’t found any significant underlying causes of infertility (also called “unexplained infertility”)
- You don’t ovulate regularly (or at all), and need some help regulating ovulation and boosting egg production
- You have a partner with sperm
- Your partner with sperm has a normal semen analysis and no major fertility issues
- You’re physically and emotionally comfortable with vaginal sex
- You don’t have any differences in reproductive anatomy that may complicate conceiving through intercourse (like blocked fallopian tubes or uterine abnormalities)
Is IUI right for me?
IUI is a great option to help you get pregnant when intercourse on its own (timed or otherwise) isn’t working.
In cases like this, IUI is often the first-line treatment—meaning it’s among the first strategies used to address fertility issues and achieve pregnancy. Your doctor might recommend trying IUI before other ART procedures, like IVF.
IUI may help you conceive if:
- You don’t ovulate regularly, or you don’t ovulate at all
- You have unexplained fertility (one of the most common reasons people use IUI)
- Your partner with sperm has trouble with erections or ejaculation
- You’re using frozen sperm
- You’re using donor sperm
- Vaginal sex is painful or otherwise not a viable option for you
- Your reproductive anatomy makes it hard for sperm to reach the uterus (like an abnormally shaped cervix or cervical scarring)
When should I consider other fertility treatments?
Other fertility treatments, such as IVF, may be a better option for you if:
- Cycles of timed intercourse and IUI aren’t working
- Your partner with sperm has significant male factor infertility issues
- You have reproductive health conditions, like endometriosis, severe fallopian tube disease, or a history of pelvic infections
>>RELATED: What Is ICSI?
Should you use hormone tracking during your fertility treatment?
Hormone and ovulation tracking may be a useful addition to fertility treatment with timed intercourse or IUI. Research shows that using ovulation detection kits can increase the chances of conceiving, helping you along your journey to pregnancy and parenthood.
If you’re trying timed intercourse without ovulation induction (that is, tracking and detecting ovulation on your own, then timing sex accordingly), hormone tracking is an essential tool.
For the most comprehensive and reliable cycle tracking, consider using an at-home kit capable of monitoring multiple hormones to provide quantitative and exact measurements, like the Oova kit.
Timed Intercourse vs. IUI: What Will Help Me Conceive? The bottom line
Timed intercourse and IUI are infertility treatment strategies that aim to boost your fertility and help you get pregnant.
While the two strategies start out similarly with ovulation-regulating medication, the crucial difference between them comes at the end of the process: timing sex to ovulation for timed intercourse, vs. injecting sperm into the uterus for IUI.
Choosing between timed intercourse vs. IUI depends on your specific fertility diagnosis and medical needs. Your doctor can help you weigh your options and determine the best path to pregnancy for you.
About the author

Sources
- American Society for Reproductive Medicine. (2021). Intrauterine Insemination (IUI).
- American Society for Reproductive Medicine. (2022). Optimizing natural fertility: a committee opinion (2022).
- Cantineau AEP, et al. (2021). Agents for ovarian stimulation for intrauterine insemination (IUI) in ovulatory women with infertility.
- Weigel G, et al. (2020). Coverage and Use of Fertility Services in the U.S.
About the Oova Blog:
Our content is developed with a commitment to high editorial standards and reliability. We prioritize referencing reputable sources and sharing where our insights come from. The Oova Blog is intended for informational purposes only and is never a substitute for professional medical advice. Always consult a healthcare provider before making any health decisions.