@llanfi
I would ask the Doctor to lower the dose of Pregabalin at night since there are severe risks of combining Tramadol and pregabalin.
Maybe don't take both?
My experience :
I had Shingles at age 76 last year and Pregabalin greatly relieved my Nerve pain . 300 was way too much that I stumbled to walk more than a few steps. Finally 100mg was acceptable for the pain relief but I could barely talk clearly on 100.
After 6 weeks the blisters from shingles cleared up but the burning and itchiness remains on my jaw and cheek.
I now only take 50mg/day as needed.
Please see another MD if possible about combination of Tramadol & Pregabalin.
Pregabalin (alone) at a Lower Dose might be all you need for Neuropathy (nerve pain).
I'm worried for you!