Why do I feel nauseous and as if I'm going to gag very often?

How to Avoid Gagging While Brushing Your Tongue: Try this psychological trick. Clench the fingers of one of your hands, gently digging your nails into your palm. Your gag reflex should be gone––apparently this works because your brain is distracted by the slight pain in your hand. Hold your toothbrush perpendicular to your tongue, brushing from the side. Putting your toothbrush in the long way will make it easier to 'slip' into the overly sensitive danger zone. It's also more psychologically invasive - namely, it makes you think consciously of gagging. Push the tongue down hard into the lower part of the mouth behind the teeth as you brush it. As soon as the tongue starts to wobble, stop, give it a few moments to retrieve your strength and try again. Exhale through your mouth while brushing your tongue. At the same time, relax your tongue and throat muscles as much as possible. Keep practicing until it becomes a normal habit. Avoid using the toothbrush for your tongue altogether. There are good tongue scrapers which can be bought from the pharmacy. Tongue scrapers or cleaners may feel less invasive and more focused on a quick clean than your larger, wider-surfaced toothbrush. You can also try "flossing" your tongue: Take a normal length of dental floss and drag it down across your tongue. This works well for individuals with a particularly high gag reflex. How to Suppress the Gag Reflex (in general): One of the most uncomfortable feelings you can experience is involuntary gagging. Unchecked, it can leave your throat raw and sore, and give you a painful case of laryngitis. If you have a sensitive gag reflex, you might havetrouble swallowing pills, brushing your teeth, visiting the dentist, or eating foods that you're not particularly fond of. Perhaps every time you go to the doctor and have your sore throat cultured for strep, you almost lose your lunch on the poor doctor! The gag reflex is your body's natural defense against choking on foreign objects, but up to one-third of healthy people don't even have it! Fortunately, there are ways to ease your gag reflex, with some tricks and training as explained below. Numb your soft palate. When an object touches the soft palate (far back in the roof of your mouth), it can trigger the gag reflex. You can use a numbing throat spray to desensitize the soft palate, or a gel that's normally used to relieve tooth pain. The effects should last for about an hour, and your soft palate will be less reactive. Disengage your gag reflex. By gradually getting your soft palate accustomed to being touched, you can minimize the gag reflex, or perhaps even get rid of it completely. This is the first step that sword swallower must take and it does require effort and patience over time: Find out where your gag reflex starts. This can be done by simply using your toothbrush to brush your tongue. The point nearest the front of your tongue that makes you gag is where you want to concentrate. Brush your tongue right where your gag begins. Yes, you'll gag, and it will be unpleasant—but not for long. Spend about ten seconds brushing that area (and gagging), and then call it a night. Repeat the process over the next few nights in the exact same spot. You'll notice you gag less each time you do it. Increase the brushing area. Once you can touch your toothbrush on that spot without gagging, it's time to move the toothbrush further back. Try brushing ¼ to ½ inch (6mm–12mm) behind where your gag used to begin. This is your new starting point. Repeat the process as you did in the first spot. Continue moving the brush farther back. Each time you move the toothbrush back, your gag has been desensitized in the previous spot. Keep moving it farther and farther back until you've reached the farthest visual point of your tongue. Eventually, the toothbrush will come in contact with the soft palate, if it hasn't already. Be persistent. This whole process should take approximately a month to complete. When the process is complete, you should be able to have a doctor swab the back of your throat without gagging. You might have to redo the process from time to time, as your reflex may return if you don't. A good way to keep yourself desensitized is to brush your tongue regularly. Not only will it help quell the gag reflex, it will also give you fresher breath! Relax. The gag reflex is triggered by a combination of psychology and physiology. For some people, the psychological aspect will play a larger role. Maybe you've had a traumatizing experience at a doctor or dentist's office in the past, or in general, you have a fear of losing control. Communicate with the dentist or doctor until you feel confident that they will back off if you ask them to—knowing that you're in control will help you relax. Some of the steps above, such as controlled breathing, will help. You may also want to practice some form of meditation. In more extreme situations, some people find hypnosis works. Lift both of your legs if you're sitting or lying down on your back. Tightening your abdominal muscles might help stop gagging. Make a fist. Close your left thumb in your left hand and make a fist. Squeeze tight. Put a little table salt on your tongue. Moisten the tip of your finger, dip it into some salt, and dab the tip of your tongue with that. Another way to do this is to put a teaspoon of salt in a glass of water, and rinse your mouth with that. Don't forget to spit! Hum. You might find that it's difficult to gag and hum at the same time. Listen to music. Distracting your mind can help keep it from giving too much focus to that which gags you. Beware the gag reflex in the morning. Some people report that they're more likely to gag earlier in the day. Try to schedule the gag-inducing activity for the late afternoon or evening instead. Breathe through your nose. Taking a nasal decongestant beforehand can help clear the nasal passageways and facilitate breathing, if your nose is congested. This method may not be a good idea if it's a foul smell that's triggering your gag reflex. http://m.wikihow.com/Avoid-Gagging-While-Brushing-Your-Tongue

You seem to have sensitive nerve endings in your mouth. You can trigger it more often to condition it to be less sensitive, or you can try to avoid triggering it. A gag reflex is there in order to avoid ingesting dangerous objects or too much of something, so keeping it sensitive could be beneficial.