I hate being in pain. I hate taking pain pills more.
Why are you taking more pain pills than usual?
It's because I wonder if the pills are working or not
If your pills are giving you that much anxiety, you should take to your doctor about them.  Hopefully they can get you something that's more reliably effective!
Maybe, no one likes pain anyway.
I am sorry that you are in pain, but it can be managed by a professional if you listen closely to their advice. Try to see what could be interfering with the pills and make sure to follow your doctor's advice strictly.