I'm four weeks post op and get my first fill tomorrow but am eating like the dr said and been having a heartburn kinda feeling..is this normal?im worried its slipped already.

I don't throw up it just kinda burns..any ideas?

It sounds like you are experiencing heartburn. Have you tried chewing on tums? If so do you feel relief from it? If it continues contact your surgeon so he can prescribe you an antacid reducer. Don't worry, believe it or not many many newly banded people get heartburn right after lapband surgery. It does go away over time. You deff will want to discuss this with your surgeon, especially before getting a fill.

Best of luck,