Bloated and nauseous in morning

Hi, welcome to the ehealth forum and I am glad to help you.
You seem concerned by the feeling of fullness of stomach, bloating and sometimes nausea for the last one year.
There are two main causes for your stomach to feel full and bloated: gas and indigestion.
Gas is a common source for creating your stomach’s bloat and fullness feeling. Gas trouble in your digestive tract usually has two means of creation:
1. the air that you swallow
2. bacteria food breakdown in your large intestine
You can lessen the air that you swallow by drinking non-fizzy liquid and chew your food down to a “stomach ready” consistency. Certain foods may cause you to experience that “feeling bloated” gas, while not causing the same “full and bloated’ feeling to others. Another common source for your stomach bloating and fullness is indigestion. For many, it results from eating too much, eating too quickly, eating high fat foods, eating during stressful situations etc. Other causes for the “I feel full” bloat of indigestion or making it worse include smoking, being tired, ongoing stress, drinking too much alcohol, medications that irritate stomach lining. Avoiding the foods and situations that seem to cause indigestion is the way to treat bloating and fullness. If you have persistent gas and indigestion that is not related to any of these food type factors. This type of “fully bloated” discomfort may be caused by a problem in the muscular squeezing action of your stomach. And treatment for this functional problem may require a prescription medication to rev-up stomach motility. You may like to relax and eat slower toward a healthy solution to your “gas bloated and full” situation.
Your feel full bloat of indigestion might be caused by a disease in the digestive tract such as GERD, gastritis, lactose intolerance, fructose intolerance, irritable bowel syndrome.
You must consult your gastroenterologist for definitive diagnosis as the same cannot be made online.
Hope this helps. Take care.
Note: This post is not to emphasise final diagnosis as the same cannot be made online and is aimed just to provide medical information and no treatment suggested above be taken without face to face consultation with health care professional.