Hi stobbs welcome .
I'm not the best person to advise because I'm quite new to all of this - sep . I know pain is a symptom though and it is my main one . I have been given cocodamol and told I can take ibuprofen . I find the pain worse until my tablets start kicking in . I take them in the morning about 7am . Like you my walking not so good first thing and my speech is a bit slurred at end of day when I suppose tabs wearing off .Do you have a PD nurse ? When are you next seeing neuro ? Where is the pain ? Mine is right side ( affected side ) I am waiting for shoulder scan too something I should've had done but didn't as orthopaedics sent me straight to neurology for brain scan . I am worried I've done some damage to this arm as it had been weak for so long and really hurts .
Perhaps you are under medicated ? Pain has improved in head leg for me but not arm .
Ive read the tremor is the most difficult thing to control . I hope you get to speak to someone soon who can help