Change from Stalevo to Pramipexole

Hi all

Dx March 2017. Was on Madopar moved to Stalevo and was doing really well.
I was referred to a senior Neurologist who has told me that my dosage is too high for Stalevo at my stage of progression and has reduced my level of Stalevo but introduced Pramipexole.
After 3 weeks I feel dreadful. I have brief moments when movement is good, but some of the time I feel unmedicated so my walking is poor, pain in joints etc etc
This is in addition to nausea and headaches, increased perspiration and extreme thirst.
Beginning to get to the end of my patience anyone experience anything similar?