Did you ask your neurologist about these symptoms? I asked my neurologist about symptoms that would last as long as several days to a week and he said these were not exacerbations or relapses.
I even asked if he was sure - maybe they were less severe relapses - again he told me these are not relapses. However, he didn't offer any further explanation. I will say this, when I had definite relaspses, they were obvious/severe - leaving no doubt.
Prior to my diagnosis, my left arm would go numb for a few hours here and there, often in mid-afternoon. I remember shaking my arm, attempting to get the feeling back (never worked), but the numbness always subsided. This numbness would happen 3 days/week, then 5 days/week, then nothing for several months. Another symptom I overlooked was my right itching insanely - to the point that I absolutely had to take off my shoe to scratch. Again, this was brief and always went away.
Today, looking back on these events with some knowledge of M.S. I am convinced that these were milder exacerbations. I have a cousin who's only symptom prior/leading to his diagnosis was numbness if one foot. Another relative had a few dizzy/light headed spells (only symptom) prior to diagnosis.
I think the differnce here is that I too attributed a reason for these symptoms (arm numbness - Imust be sleeping on my arm; foot itching - must be too hot); whereas they sought medical attention/advice for an answer.
Trust your instincts and talk with neuro or quaified medical professional you trust.
Take Care & Have a Prosperous New Year!