It seems as if your doctor's advice is very reasonable. Having had 3 Nissens in a year, before jumping into another one, checking out other possible options makes all kinds of sense.
Try to be patient, and give the medications a chance. You didn't get this way in a week, and it'll take more than a week to get things straightened around.
Let's hope that your new doc is absolutely right, and things get better for you very soon! We're all rooting for you!
Take care, and Very Best Wishes!