Regarding my reflux do i need nissen surgery, or continue using nexium (esomeprazole) with diet & healthy foods. no chocolate, fried food, acids, alcohol, etc...

Depends on you: It depends on a number of factors. How large is your hiatal hernia? Do you have a hiatal hernia? How often do you have reflux attacks? How many pills do you take each day for reflux? Is this something that really impacts your life? Is it worth the surgery. Generally if you have a large hernia take pills at least 2x a day and have multiple attacks per week, you may want to consider surgery.

Weight matters: The surgery can help reflux, but many people get relief with losing weight, modified diet, and elevating head of bed. Your GI doctor can probably predict your chance of getting better without surgery and recommend a good surgeon if you need one.