10 Period Myths You’ve Probably Heard (and the Truth Behind Them)
"When I experienced my first period, I was surrounded by confusion and conflicting advice. Friends warned me not to swim. Family members suggested it was best to rest and avoid activity. I learned about menstruation through whispers and myths rather than clear, factual information."
Years later, it's clear that many of those early messages were not only misleading but have contributed to unnecessary stigma and discomfort around a completely natural biological process. Menstruation is an essential indicator of health — yet misinformation still shapes how many people understand their bodies.
Here are ten of the most common period myths, and the truth behind every single one.
The 10 myths — debunked
You can't get pregnant on your period
It's unlikely, but not impossible. Sperm can survive inside the body for up to five days, and if you have a short cycle, ovulation can overlap with the end of your period. Protection is still important — always.
Period blood is dirty
Not at all. Period blood is simply a mix of blood, uterine tissue, and mucus — completely natural and not "dirty" in any meaningful sense. It's your body doing exactly what it's supposed to do. There's nothing shameful about it.
You shouldn't swim or exercise on your period
You absolutely can — and in many cases, you should. Swimming, yoga, and light cardio can ease cramps and boost your mood thanks to endorphin release. Movement is one of the most effective natural remedies for period discomfort.
For most activities, period underwear offers comfortable leakproof coverage that moves with you. For swimming specifically, a tampon or menstrual cup is still needed — period underwear isn't designed for water submersion.
Periods sync up when you spend time with friends
The "menstrual synchrony" theory sounds compelling, but it hasn't been proven by science. What's actually happening is that cycles overlap sometimes — a coincidence that feels meaningful because we're paying attention to it. The research simply doesn't support the synchrony claim.
You lose a lot of blood during your period
Most people only lose about 2–3 tablespoons of blood over their entire period. It just feels like more because of the way it looks combined with the other fluids involved. If you're consistently soaking through protection every hour, that's worth mentioning to a doctor — but the average flow is much lighter than it appears.
Tampons or cups can get "lost" inside you
They can't travel past the cervix — so there's genuinely nowhere for them to go. While they can sit high or feel difficult to reach, they're not disappearing into your body. If you ever have trouble removing one, try relaxing your muscles and bearing down gently. If you're still unable to remove it, a doctor can help quickly and easily.
PMS is all in your head
PMS is very real and very physical. Hormonal fluctuations in the days before your period can cause mood changes, fatigue, bloating, food cravings, breast tenderness, and more. Experiencing these symptoms doesn't make you dramatic — it makes you human. If PMS significantly affects your quality of life, it's worth talking to a doctor about management options.
You can't have sex during your period
You can — it's entirely a personal choice. Some people find it relieves cramps thanks to endorphin release and uterine contractions during orgasm. There are no medical reasons to avoid it. Just remember that protection against STIs and pregnancy is still important during your period.
Period pain is normal — so just deal with it
Mild cramping is common, yes. But pain that stops you from going to school, work, or living your daily life is not something you should simply push through. Severe period pain can be a sign of endometriosis, fibroids, or other treatable conditions. You deserve care and answers — not dismissal. If your pain is disruptive, please talk to a doctor.
Endometriosis affects roughly 1 in 10 people who menstruate, yet takes an average of 7–10 years to diagnose. Advocating for yourself with a doctor is always the right call if your pain feels out of proportion.
Period underwear isn't as effective as pads or tampons
Modern period underwear is designed with high-absorbency layers that hold as much as several tampons' worth of flow — while being comfortable, reusable, and far more sustainable than disposables. Cheeki's 4-layer technology wicks moisture, locks in flow, and prevents leaks for up to 12 hours. It's not a compromise. It's an upgrade.
Cheeki Teen First Period Kit
The easiest way to experience leakproof period underwear for the first time — medium and heavy flow styles plus a carry pouch, all in one kit.
- ✓Up to 12 hours of leakproof protection — day or overnight
- ✓Feels exactly like regular underwear — no bulk, no shifting
- ✓OEKO-TEX® certified — tested for 100+ harmful substances
- ✓Reusable for 2+ years — better for your body and the planet
- ✓No PFAS, no harsh chemicals, no mystery ingredients
Breaking the cycle of misinformation
Understanding the truth about menstruation is an important step toward breaking long-held taboos and building real confidence in your body. When we replace myths with facts, we normalise the conversation around periods — and make menstrual health something everyone feels comfortable talking about openly.
At Cheeki, we believe education and innovation go hand in hand. Every product we make is designed to offer comfort, reliability, and sustainability — helping you manage your cycle with confidence, every month.
Period care that actually works
Comfortable, leakproof, and certified safe. No myths, no compromise.