On April Fool's Day, think before you joke about pregnancy.

“It’s a girl” the pop star said, including a few heart emojis for good measure.

On April Fools' Day, Stefani — and countless others — sometimes take to the social media account of their choice and attempt to convince their unsuspecting friends and relatives that they're pregnant. 

"It's all in good fun," they quip. "It's no big deal."

But they're wrong. 

According to the American College of Obstetrics and Gynecologists, an estimated 10% to 25% of of pregnancies end in miscarriage. And women who've had a previous miscarriage have a slightly elevated risk of having another. 

So whether you're aware or not, there is a strong likelihood that someone you know has or will suffer from pregnancy loss. 

And that's not even accounting for the 10% of women (that's more than 6 million) between the ages of 15 and 44 who have had difficulty getting pregnant or carrying their baby to term. Or the men, whose own health issues make up about 33% of infertility struggles.

For couples with fertility issues, trying to conceive can be expensive, painful, and physically and emotionally exhausting.  

Still laughing? 

Despite the fact that so many pregnancies end in miscarriage, the topic is still taboo, often discussed in hushed tones. 

When writing about her own experience, actress Laura Benanti wrote in The Huffington Post: 

Many families never discuss their loss or struggles with friends or families; instead they press on in private. Some individuals develop depression, anxiety, or even post-traumatic stress disorder from the experience. 

People who take offense to these "jokes" aren't trying to be killjoys or wet blankets. They're handling a complicated, painful experience that's still cloaked in shame and silence for far too many families. 

Celebrate. Have fun and enjoy yourself. But if you're thinking about making a fake pregnancy post, think again. 

It's just not funny.