Thank you for the query.
Your symptoms are caused by GERD
which is caused by some problems with lower esophageal sphincter. One of the treatment is fundoplication which I assume that has been done. Usually it helps a lot with symptoms, however in some cases full relief is impossible.Cough
is very common symptom with GERD and can indicate asthma
The treatment you have for acid reflux
is a good one and is hard to advice anything more. For sure you should avoid coffee, alcohol, fatty foods, chocolate. Put your head a little bit higher while lying down, do not eat 2 hours before the meal.
For cough, please consult pulmunologist and have blow test done.
Hope this will help.