Bad gastric reflux. I wake up coughing and coughing and gagging. at work I cough and gag, its embarring?

I am on Nexium to reduce acid in stomach (40mg) I watch what i eat. I take malanyta and quickeze. I have had reflux for 3 years and specialist says to have operation where they wrap stomach around valve as valve not closing, anyone had this operation - I have heard its not that good and long recovery period. help me to get rid of reflux please.