So someone I was caring for recently was on the same meds. And they didn't like the feeling and were paranoid they would be addicted. After 3 refills they are not addicted and are fine. They no longer need or desire them.
However they sounded just like you, freaking out and over analyzing things. Don't post on the internet when you are under the influence of these. Also, do not make any "life decisions". Take as needed for pain, allow your system to heal. And write yourself a post-it note that says, "Are you high right now?" And maybe a little Stop sign to remind you to just chill while on these.
Everything will be ok.