I need your advise!

I have had issues with fills. I had my first fill under xray. After a lot of pushing and prodding and the use of contrast they put in 6 mls. I felt no difference. Two days ago the doctor tried another fill in his rooms. He said he got out 6 ml and put it back in with an extra 3ml but couldn't get it back again so isn't positive it went into my port. (My port tips and the needle slips out) The fluid he gets back is yellow and previously he has said it wasn't from my band but he doesn't know where it is from. No pockets of fluid were evident on xray. Any way, because the doc is not sure if the fluid went in he gave me a referral for another xray that i have to get done next week if i dont feel any restriction.From there he is thinking of an endoscopy. Well i am eating the same as before with no problems but yesterday after chicken and salad i had a tight feeling across my back radiating up into the side of my neck that slowly eased off over time, not a bad pain just annoying. Do you think this is a sign of restriction? I am looking for food again before 4 hours is up but am not sure if that is just head hunger. I could have zero, 6mls or 9mls of fluid in my band. I dont know if i need to have the xray or not. Doc says i must have restriction if i am loosing weight, but my loss is very slow and i am dieting basically, and exercising nearly every day. I have never had a stuck episode, never PB'ed and never vomited but have definitely exceeded the amounts i food i should be able to eat.

Any advise will be greatly appreciated.I dont want the xray if i dont need it.