Your cousin鈥檚 friend鈥檚 sister鈥檚 mother told you that you鈥檒l definitely have a girl if you get pregnant on a Thursday. What? Oh, the baby-making myths. Everyone has their own story to spin. Whether it鈥檚 foods to eat, positions to try or kind of weirdo oddball advice, it seems like everyone has an opinion on fertility that they need to share with you. And, surely none of them are old wives鈥 tales. Right? Before you believe in anything that anyone (other than your doctor) says, check out the scoop on some of those magical little myths.

woman finding out she's pregnant

1. Cough Medicine Conception: So, the story goes that drinking a guaifenesin-containing cough medicine (such as Robitussin) will get you pregnant. The so-called science behind it is that the active ingredient (it鈥檚 an expectorant) not only thins the mucus in your lungs but also thins your cervical mucus. This would then make it easier for the sperm to reach the egg (swimming through thin cervical mucus, not through thin lung mucus, of course). There鈥檚 no actual medical evidence saying that Robitussin really works. But there was one study of one man who did increase sperm count and motility after taking guaifenesin. Yep, that鈥檚 one. Only one. Unless that鈥檚 your guy, don鈥檛 count this as true.

2. The Temperature Tells: A high resting body temperature equals baby-making time? It might. Your basal body temperature (that鈥檚 the temp you take first thing in the morning while at rest) rises slightly when you ovulate. Keep in mind, your BBT may not be exactly on-point all of the time. The average BBT is between 96 to 98 degrees Fahrenheit pre-ovulation and between 97 and 99 degrees Fahrenheit after, according to US Department of Health and Human Service鈥檚 Office on Women鈥檚 Health. BBT is not necessarily the most effective way to time conception, because once your BBT rises, you鈥檝e already ovulated, shortening the window for a possible pregnancy.

3. 24/7 Sex Is the Way to a Baby: Well, your future baby-daddy may like this one (and may absolutely insist that this is, in fact, correct). Sadly for him, it鈥檚 a myth. You can spend the entire day in bed, but if you鈥檙e a week away from ovulation there鈥檚 no actual making of a baby going on. Timing is everything for conception, and the ideal timeframe is right before and during ovulation.

4. Eat Yams, You鈥檒l Have Twins: Look out post-Thanksgiving preggos, it looks like you鈥檙e in for double the joy. Or not. The theory behind this one comes from West Africa. The Yoruba tribe has the highest twinning rate in the world. It just so happens that the Yoruba women eat a lot of cassava, a yam-like plant. Researchers found that the skin of the tuber has a chemical that could be responsible for releasing more than one egg at a time 鈥 in higher than normal rates. There is no scientific evidence that supports that it鈥檚 the yams that are directly responsible for twins (there could be other factors at play). So unless you鈥檙e heading overseas to live in the West African town of Igbo-Ora, don鈥檛 expect a few extra yams to give you multiples.

5. Boys Are Faster: Here鈥檚 the supposed trick to conceiving a boy 鈥 have sex as soon as you ovulate. Why? It鈥檚 rumored that Y chromosome-bearing sperm are faster than the X chromosome kind. In case you鈥檝e forgotten high school bio, XX equals a girl, and XY equals a boy. In the 1960s, the Shettles Method grew from the work of Dr. Landrum Shettles. Dr. Shettles found that Y chromosome swimmers were faster than their female counterparts (sounds like something only a man would say, right?). Even though some women swear by this, the research doesn鈥檛 back it up, showing there isn鈥檛 a difference in swim speed between X and Y sperm.

What鈥檚 the craziest baby-making myth that you鈥檝e heard? Share yours and tweet us @BritandCo !

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