Hi. Sorry about the stress.
If there is a violation filed, it will show up on your score report that it is being investigated. If it does not show up in the 48 hour time-frame, it is unlikely it will be filed afterwards.
That is a bit odd to have a bag/object/item with you in the testing room. However, it seems that it should be pretty clear (in many meanings of that word) that you were unlikely to use/benefit/steal anything using the bag. There are video cameras at the test center that will allow them to review the footage if you did have an issue but I think the proctor also probably realizes it will be a fool's errand to try to chase someone about a clear plastic bag and they would look pretty silly to flag it.
You can only wait and see though I would say chances of anyone flagging it are low.
Hope the score sticks.
BB.