Have you ever been getting hot and heavy with your boyfriend when you've suddenly felt an overwhelming urge to pee? Even though you're pretty sure you just went like half an hour ago? If nothing else, it's kind of distracting, but you can chill out because there's actually a biological reason behind why you get that feeling.
And it doesn't take a rocket scientist to work it out (just someone who specializes in human physiology). It's all to do with the fact that the bladder is located just behind the vagina. Speaking to Refinery 29, Shape magazine's go-to sexpert, Dr. Logan Levkoff, explained that when a penis is penetrating your vagina, it often puts pressure on the bladder because they're so close together.
And if he's coming in from behind, you're even more likely to feel it. So if you're planning to do it doggy style, make sure you've relieved yourself beforehand. The same goes for when you're lying underneath him with your pelvis slightly lifted, points out Cosmo US. But panicking you might piss yourself will only make things more urgent, so try to relax.
If things get really intense and you do actually feel yourself peeing during sex (don't worry, sex is pretty much designed for embarrassing things to happen), Dr. David Delvin discussed why that might be with Net Doctor.
If it definitely is urine that's being passed, then "it sounds as though your pelvic muscles may be a little out of shape," he says, adding that it tends to happen more frequently after childbirth.
So don't worry too much if you suddenly get the urge to go mid-sex. It's actually his fault.
This article originally appeared on Cosmopolitan.co.uk. Minor edits have been made by the Cosmo.ph editors.