Are you drinking coffee/tea regularly? Cut them out for a week and see if you notice improvement.
Purchase some good probiotics. I would look on Amazon and buy something reputable, preferably over $10, do your research.
I would also suggest some digestive Enzymes. "NOW" is a good brand. This would provide some immediate relief.
If none of the above work for you I would suggest you see a specialist for diagnosis.
I have bloating after eating due to low stomach acid. I also have water sloshing in my stomach too. Might be due to low stomach acid as well.
Excerpt from Gallbladder Attack - Chronic Heartburn...
"Signs of Deficient Stomach Acid
Gas, bloating and burping shortly after a meal could be lack of HCl
Feeling of fullness or food not digesting
Heartburn and/or gastric reflux (sometimes too much HCl but most often not enough)
Foul smelling stools
Loose stools in the early morning
Dialated blood vessels on the cheeks and nose - Rosacea
Pernicious anemia or iron deficiency
Nausea especially after taking vitamins and minerals
Weak or cracked nails
Parasites - or at least increased susceptibility to parasitic infections
Chronic yeast infections
Acne in adults - especially if you have other symptoms from the list
Since low levels of stomach acid results in poor absorption of nutrients, many symptoms that accompany a deficiency of that vitamin or mineral makes this list much longer. The nutrients most affected are calcium, iron, folic acid, vitamin K and many B vitamins. See pernicious anemia.
If you're nervous about trying supplemental hydrochloric acid, you can do a trial with 1-2 TBSP of organic apple cider vinegar mixed with 1/8 to 1/4 cup of water after a meal. If it makes you feel better and does not hurt, you most likely would benefit from taking 500 - 1000 mg. of Betaine HCl with your meals. Or you can also take a dropperful of Herbal Digestive Bitters (aka Gallbladder Bitters) with your meals which stimulates digestive juices including both HCl and bile. To curb sugar cravings, take bitters after your meal as well."
You need to see a specialist gastroenterologist. Most general practictioner will assume you have GERD and prescribe you acid blockers. This may or may not be what you need.
Hello~The water sloshing in the tummy is normal, I have had it and so have other members of my family, I don't think that part is an area of concern.
As to the bloat and larger tummy, you may not be digesting your food properly or you may have food allergies. I would see either an allergist to be tested for food allergies or a gastroenterologist. Also, as the other poster's have suggested,start taking a good, high potency pro-biotic.
I would also try cutting out all wheat, sugar and gluten products as these foods can cause the issues you are having as well.
I hope you feel better soon.