Hi and welcome to the GERD forum.
LPR can exist for a time and u not be aware of it bcuz some do not have the traditional heart burn with it .....
Sometimes it can take several weeks to get the meds to work and u notice a benefit from them.
What u eat is a big thing as well as some things like smoking, or drinking like soda's...if u want to feel better u will have to modify ur diet and lifestyle in order to help the meds....as they can not help u alone if u do not watch what u eat....
The sooner u modify ur diet and lifestyle the faster u may see benefits, but it can take time....stress can also trigger symptoms to flare, so try to relax....for tips on diet and lifestyle see the Health Pages.
http://www.medhelp.org/health_pages/list?cid=236