Hi AlexT and welcome to NeuroTalk.

No. Don't give up

When I was 24 years old I lost the majority of my mobility, I was numb from the waist down, a lot of pain, really bad fatigue, hand tremors, pins and needle and buzzing/vibration sensations. It took 3 months but I did end up with a diagnosis.

As difficult as it is, have faith that the Neurologist or some other Dr. will be able to explain what is going on. There is quite a bit of testing that can be done to rule in/out different causes. The MRI is a great diagnostic tool but does not always indicate the problem.