But sometimes, a person may instead feel the opposite. Immediately following sex, they’re hit with a wave of negative emotions: They feel suddenly sad, irritable, or isolated, and they may even start inexplicably crying. The phenomenon is known as postcoital dysphoria, and it’s actually way more common than you’d think. Importantly, PCD refers to when there is no discernible reason for the person to feel negatively about the sexual experience that just happened—it was consensual, pleasurable, and perhaps even induced some orgasms, and yet the person still feels upset afterward without a clear understanding as to why they’re feeling that way. It can happen to someone even when the person they slept with is someone they’re in a serious, committed, and loving relationship with, just as easily as it could happen when it’s with a first-time or casual partner. There has yet to be much substantive research done on PCD, and so it’s still not a well-understood phenomenon even among sexual health professionals. “We unfortunately don’t really understand postcoital dysphoria very well,” Vanessa Marin, a psychotherapist specializing in sex therapy, tells mbg. “We really only know that it exists. It doesn’t seem to have any relationship with the type or quality of sex that you have, or your relationship with your partner.” The few studies that have been done show that PCD is a fairly common experience: A 2015 study found 46 percent of straight women had experienced it at least once in their life, and 5 percent had experienced it a few times in the last four weeks. Another study released last month found 41 percent of men (most of whom were straight) experienced PCD at least once, and 20 percent had experienced it in the last four weeks. (Side by side, these two studies suggests PCD happens at fairly similar rates between men and women, but the latter study actually found women were about twice as likely to have experienced PCD in the last four weeks compared to men and nearly three times as likely to have experienced PCD in their lifetime.) “A vulnerability hangover is most often triggered by going too fast or doing too much for what the psyche or body can handle,” sex coach Irene Fehr tells Bustle. “It is often exacerbated by a cocktail of consciousness-altering substances such as alcohol or drugs that relax and allow the drop of inhibitions, enable going faster than might be comfortable, and make crossing boundaries that would otherwise hold in a conscious state possible.” “Participate in some type of self-care ritual,” she suggests. “Whether it’s a bath, reading a book, taking a nap, or meeting your friends, do something to nurture yourself.” “If you’re with a partner and feeling embarrassed, you can simply say something like, ‘This is something that happens to me after I have sex. It’s not tied to the sex that I’ve just had. It’s just a thing that happens. I’ll be over it soon,’” Marin says. If you need a real outlet, Dr. Overstreet suggests writing down what you’re feeling to help you acknowledge and process those emotions in a healthy way. Whatever you do, just know that you’re not alone in your feelings, and you’re not abnormal for having them. Many people struggle with postcoital dysphoria from time to time; what’s important is developing an appropriate and healthy way to respond to your emotions and take care of yourself (and your partner) as you go through it. With her warm, playful approach to coaching and facilitation, Kelly creates refreshingly candid spaces for processing and healing challenges around dating, sexuality, identity, body image, and relationships. She’s particularly enthusiastic about helping softhearted women get re-energized around the dating experience and find joy in the process of connecting with others. She believes relationships should be easy—and that, with room for self-reflection and the right toolkit, they can be. You can stay in the loop about her latest programs, gatherings, and other projects through her newsletter: kellygonsalves.com/newsletter