Could you be getting reflux? Possibly. My surgeon said "anything is possible at your early stage of recovery" when I questioned him on reflux feelings I was having at about your stage. As Joy said, with the swelling, there can be some unevenness in the shape and fit of the wrap, which could allow some reflux through.
However, the "reflux" feeling you're having could simply be straight pain, which is always much worse at night. Are you still taking the narcotic pain medication at night? Definitely continue that.
One other thing that could be happening is food/medication getting stuck at the wrap site and irritating your wrap. With the swelling, it becomes more difficult to get food and medication through and into the stomach, and at times it can get hung up at the base of the esophagus and slowly and gradually make it through the wrap. In the meantime it can irritate the esophagus and cause pain that feels exactly like reflux (remember that "dumb organ").
Whatever the case, you're in the roughest stage of recovery, and it will get better with time. We all had to go through those first few weeks, and it's not easy, I know. Hang in there, go with the flow, surrender to your recovery and accept it as it is...it will improve with time.
Walking can help with the shoulder pain. A very wise night nurse at the hospital clued me in on this. She said that I should get up and walk whenever I got up to go the bathroom. I walked in the hospital, dragging my IV pole along for the ride. At home I walked laps around my house. Eventually I started on my treadmill, but even if you don't have one, walking around your house regularly can be helpful. That shoulder pain is very annoying and painful I know. I found that the more I walked the less pain I had, and visa-versa.
Hang in there!
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”