Drs have done 4 endoscopies, i don't have hiatal hernia, if i don't take nexium (esomeprazole) daily i feel horrible, i diet, what's wrong? are there any surgerys to fix acid reflux?

Preventing reflux: Part of preventing reflux is maintaining weight, elevating head of bed, not lying down for at least 1 hr after eating, avoiding trigger foods like fried/fatty/greasy foods, spicy foods, onions, caffeine, soft drinks, acidic foods (tomato/lemon/lime). Have doc test for helicobacter pylori, which is associated with ulcers, possibly reflux. Treat if positive. A different ppi may work better for you.

Most definitely : Your condition if confirm as acid reflux can be treated with anti reflux procedure (nissen fundoplication) or less invasive and less effective procedure esophyx. Talk to your doctor.

Yes: There are several techniques, and laparoscopic approaches (minimally invasive surgery) are available. The laparoscopic nissen fundoplication wraps a portion of your upper stomach around the end of the esophagus, effectively creating a high pressure area that restores the functions you are missing of preventing reflux of stomach acid to the esophagus. It is very effective.