Hello christobelle and welcome to NT .

MS is an odd character indeed and it can manifest in countless ways. It seems that no two cases are identical but not having lesions show up on MRI is not all that unusual, especially initially. The type of MRI machine can also make a difference in whether lesions show up or not (T3 machines are very sensitive).
Similarly, one sided symptoms are not unusual.

Have you had your B12 levels checked? If it is low, that could account for some of the symptoms, even if MS is present.

Sorry that you have to wait to have another MRI and to see the neuro, but April isn't too far off. We have the same sort of public health system in Canada and in the USA, others seem to be running into some problems with their insurance as well. Sign of the times I suppose.

Please keep us posted and join us on the forums. There are many great people on here with varied backgrounds, information, experiences and all of us here to support one another. So even if you just need to vent to people who understand, this is a good place to do it.

With love, Erika