Menstrual Discs After Sex for TTC: Does the “Softcup Method” Actually Help?

Few TTC tips spread as quickly as this one. It's cheap, it's private, it makes intuitive sense, and it gives you something to do in a process that often feels out of your hands. Those are all good reasons to be curious. They're not evidence, though — so let's separate what's known from what's hoped.

The idea behind the hack

A menstrual disc sits high in the vagina, tucked into the space just below and around the cervix, rather than lower in the canal like a cup or tampon. The theory goes:

1. After intercourse, some semen flows back out of the vagina.
2. A disc inserted soon afterward could catch that semen and hold it pooled at the cervix.
3. More sperm in contact with fertile cervical mucus for longer might mean more sperm make it through.

The name comes from the brand Softcup, an older disposable disc. People now use various disposable and reusable discs the same way.

Each step sounds reasonable. The problem is that no one has shown the last step — more pregnancies — actually happens.

What the evidence actually says

No trials of menstrual discs for conception

We searched for controlled studies of menstrual discs or cups used after intercourse to improve pregnancy rates and found none. Everything you read in favor of the method is either anecdote (“I used a disc and got pregnant that cycle”) or borrowed from a related but different technique.

Anecdotes are tricky in TTC because most couples conceive eventually without any hack. ASRM's committee opinion on natural fertility notes that about 80% of couples conceive within the first 6 months of trying. Someone who used a disc the month it worked will understandably credit the disc — but without a comparison group, we can't know.

The closest relative: cervical cap insemination

The nearest research comes from clinics in the 1980s that used custom cervical caps or cups to hold semen against the cervix. For example, a 1983 Fertility and Sterility study taught 61 couples with infertility to use a cervical cup for home insemination with the partner's semen; 32 of the couples conceived (36 pregnancies). A 1982 Obstetrics & Gynecology review of cervical-cap donor insemination reported cumulative pregnancy rates of 62.5% at 6 months.

These are interesting, but they don't settle the question:

• No control group. Neither compared cap users with similar couples who didn't use one.
• Different devices. Fitted cervical caps sit directly over the cervix; a menstrual disc sits beneath it in a wider space.
• Different setting. Clinicians taught and supervised the method, often with semen collected separately.

The modern descendant of this idea is The Stork OTC, an FDA-cleared cervical-cap device. Its manufacturer cites a study showing more sperm at the cervix than with intercourse alone — but sperm counts at the cervix aren't pregnancies, and that device is a purpose-built cap, not a menstrual disc. We compare it in Mosie Baby vs Stork OTC vs a syringe.

A related myth: lying still afterward

The disc method is a cousin of the old advice to lie on your back with your hips raised after sex. ASRM is blunt on that one: it says lying on your back after intercourse to help sperm transport has “no scientific foundation,” and that there's no evidence sex position affects fertility. In other words, staying horizontal isn't what gets sperm where they need to go — and the disc method rests on a similar, untested assumption.

What manufacturers and the FDA say

• The FDA treats menstrual cups and menstrual discs as the same category of product, “inserted into the vagina to collect menstrual fluid,” and says they are not intended for non-period vaginal drainage or bleeding. Holding semen is outside what they're designed and labeled for.
• Wear time. The FDA's consumer page says a menstrual cup may be left in place for up to 12 hours. Flex says its discs can be worn for a maximum of 12 hours; Softdisc says the same of its disposable disc.
• Not a contraceptive — and not a fertility device. Flex states its reusable disc is not a contraceptive and won't prevent pregnancy or STIs. Neither Flex's nor Softdisc's FAQ pages we reviewed mention using their discs to help conceive.
• IUDs. Not usually relevant when trying to conceive, but the FDA notes cups may interfere with an IUD.

So if you try this, you're using the product off-label. That's not inherently dangerous, but it means no one has tested it for this purpose and you should follow the product's general safety rules strictly.

If you try it: a safer way to do it

1. Start with a clean disc. A new disposable one, or a reusable one cleaned per its instructions. The FDA advises washing your hands before and after handling a cup.
2. Insert it soon after sex, following the product's own insertion instructions. Don't force it or angle it differently from normal use.
3. Keep the time short. There's no evidence that longer is better. A few hours is plenty for the theory to work if it works at all — and staying well inside the 12-hour maximum leaves a margin. Many people simply wear it overnight after evening sex and remove it on waking, as long as that's under the product's limit.
4. Remove it gently, following the product's own removal instructions, ideally over a toilet or in the shower.
5. Skip it if anything hurts, or if you have an active vaginal infection, unexplained bleeding, or a history of TSS. Stop if you notice irritation or unusual discharge.
6. Don't add anything to it. No lubricant inside the disc, no supplements, no homemade additions.

If you'd like to try it, look for a disc you'd be comfortable using during your period too, so it isn't a single-purpose purchase — you can compare menstrual discs on Amazon. Just keep the expectations modest.

Amazon links are affiliate links; we may earn a commission at no extra cost to you.

What moves the odds more

If you're going to spend effort, these have real evidence behind them:

• Timing. ASRM describes the fertile window as the 6 days ending on ovulation day, with intercourse every 1–2 days in that window being most efficient. A disc after poorly timed sex won't help; well-timed sex without a disc is the main event.
• Find the window with real data. ASRM notes calendar and app methods reach at most 21% accuracy at predicting ovulation day, while ovulation-detection devices shortened time to pregnancy in a randomized trial. Inexpensive LH strips are covered in our cheap OPK strip comparison.
• Watch cervical mucus. ASRM reports pregnancy rates were highest — about 38% — when intercourse fell on the day of peak mucus.
• Mind the lubricant. ASRM notes some water-based lubricants inhibit sperm motility in the lab (though use didn't change pregnancy rates in studies). If you need one, pick a fertility-friendly option.
• Don't ration sex. ASRM says couples shouldn't be told to limit frequency; semen quality holds up with frequent ejaculation and starts to decline after 10 or more days of abstinence.
• Check the other half. A semen analysis answers more than any hack. See Yo vs Fellow home sperm tests.

And if months have gone by, the next step is an evaluation, not a better hack: ASRM recommends one after 12 months of trying under 35 and after 6 months at 35 or older. Our guide on when to see a fertility doctor explains what that involves.

Product details and prices reflect manufacturer information checked in October 2026 and change often — always confirm current instructions, pricing, and return policies with the manufacturer before buying. This article is educational and is not medical advice.