It might be something like acid reflux or lactose intolerance, however these wouldn't cause the weight loss you describe. I would recommend that you have blood tests done before your ultrasound. I doubt an ultrasound will show anything (the only thing untrasounds will sometimes show is gallstones, which doesn't match up with your symptoms). Something like an endoscopy or swallow study is much more likely to show something.
yes i went to see my doctor I am having an ultrasound on the 08th september however ive been going through this for 6 weeks now and it does not seem to be getting better, i have been eating alot of natural yogurt, this seems to help ease any acid but thats all i can do, does anyone know what it may be so i can research this? thanks
Welcome to the gastroenterology community! I would recommend that you see your doctor about this, expecially because of the weight loss.
I forgot to include I have not been dieting the weight loss is unknown