Why Do I Feel Sick After Sex?

Feeling sick after sex isn’t unusual. But it’s not something you should regard as normal. It’s a terrible way to end off a passionate night with your significant other. And if you feel sick after sex, you must investigate further.

If you feel sick after sex, it can be worrying. But there are many possible explanations as to why you feel this way. And many causes have a simple solution. While others could be more serious. Some causes may be penetration depth, the intensity of the act, contraction of the uterus, or endometriosis. Dehydration, foods, alcohol, and drugs can also play a role.

The truth is several things could make you feel ill after intercourse. In fact, experiencing an orgasm in itself could cause you to feel nauseous afterwards. However, get to the heart of the problem Is crucial if you don’t feel well. Especially if you regularly feel this way.

Let’s take a closer look at these and other possible reasons why you feel sick after sex.

Reasons Why You May Feel Sick after Sex

The Penetration Was Too Deep

If your partner penetrates you too deeply, it may result in contact with your cervix. Making contact with your cervix can easily stimulate your vagus nerve. This nerve which passes through your body connecting your abdomen with your brain. When stimulated, you’ll experience what is called a vasovagal syncope

A vasovagal response will result in a rapid dip in your blood pressure and heart rate. And this could make you feel very nauseous. This response can also make you feel faint. 

However, when your body reacts in this way, there’s no need to be alarmed. Simply lie down and give your body time to rest while waiting for the feeling to pass. Deep breathing is also effective to overcome this feeling. 

To avoid feeling sick after sex, speak to your partner about the level of penetration you’re comfortable with. Try out different positions when next you have sex to discover what works and is more comfortable for you.

You’ve Got Motion Sickness

That’s right. If your sexual activities result in you being very active for prolonged periods, you may feel queasy afterwards. Thrusting vigorously back and forth without stopping can cause motion sickness. The same way that a rocking boat or car makes you feel ill.

Motion sickness may not be a common cause of feeling sick after sex, but it does happen. Therefore, it’s worth considering as a possibility. If this is the reason you’re feeling ill, it may be wise to slow things down a little bit next time.

It Could Be Your Orgasm

This may not be the best news, but your orgasm could be the reason you feel sick after sex. When you climax, your uterus contracts. And for some, this can lead to both pain and nausea during and after sex. But that’s not to say you have to steer clear sex or orgasms to keep this feeling at bay.

If you take a mild anti-inflammatory before sex, it should prevent the awful side effects of the orgasm. And you should feel satisfied and uplifted after an orgasm.

You May Have a Growth

A more serious underlying condition could make you feel sick after sex. And one of the possibilities could be some type of growth or mass. Common growths that could be likely culprits are fibroids and ovarian cysts. If either of these are aggravated during intercourse, it could result in nausea and possibly some pain.

If you think there’s a chance you might have fibroids or a cyst, it’s best to er on the side of caution and see your gynaecologist. Your specialist will carry out a pelvic exam and ultrasound to determine whether a mass is present. And they’ll then recommend a course of treatment if one is found. 

Treatment may involve taking medication over a short period. Or, if the mass is large, you may need surgery.

Endometriosis May Be the Cause

Endometriosis is a serious but treatable condition. And it occurs when the lining tissue of the uterus starts growing on the exterior of the uterus cavity. Someone with endometriosis may feel pain and nausea during and after sex. 

This is a condition that must not be disregarded. The sooner you detect it, the easier it will be to treat. Therefore, if you’re experiencing unpleasant bouts of nausea and discomfort when having sex, please see your doctor as soon as possible.

It May Be a Psychological Issue

Several psychological conditions can elicit a physical response to whatever emotions you feel. For instance, if you’re prone to anxiety and feel anxious around your partner, it could make you feel sick after sex.

Or perhaps you suffer from PTSD due to a traumatic event linked to a past relationship. If so, it’s entirely possible that the act of intercourse may trigger some difficult emotions and make you feel ill.

These are just two examples. It could be an of multiple psychological responses. Irrespective, it’s vital to make an appointment with a psychologist as soon as you can in this instance. The sooner you can talk things through with a professional, the sooner you can deal with your emotional barriers. And the sooner you can go back to having sex enjoyable and fulfilling sex with your partner.

Steer Clear of Alcohol and Drugs

Drinking a great deal of alcohol or doing drugs before sex is a sure-fire way to make yourself feel ill. Drugs, such as cannabis and meth, and alcohol alone are often associated with feelings of nausea, dizziness, headaches, and more. 

Consuming these before engaging in physically demanding sexual activity will certainly increase your chances of feeling sick after sex. So, it’s best to steer clear of these substances or at least consume them in moderation before sex.

It Could Be What You’re Eating

You may have experienced certain foods being less agreeable than others. You could have a food allergy or two, which forces you to avoid certain types of food. And you may also have food allergies you aren’t aware of yet. 

Taking part in a rigorous session of intercourse with your partner may just aggravate an underlying issue related to food. Or it could simply mean that you ate too much before sex or were too active too soon after eating.

Granted, this is an uncommon cause for feeling sick after sex. However, it might be a good idea to monitor what you eat before sex. And, if you feel ill afterwards, try adjusting your diet before your next romp under the sheets.

You May Be Dehydrated

Dehydration is a common problem in general. And it may be the answer to you feel sick after sex. Being dehydrated could lead to more severe health problems down the line. So, it’s best to quickly get into the habit of drinking about 1.5 litres of water per day.

Staying hydrated could be the difference between a disappointing night of lovemaking and a pleasant one. 


Irrespective of what causes you to feel sick after sex, it’s vital to realize that it’s not a normal response to sexual intercourse. And it could well be your body letting you know that there’s an underlying issue that needs your attention.

If you feel sick after sex once and never again, then chances are you have nothing to worry about. But if you frequently feel this way after sex, it’s best to seek medical advice.