Afraid of MS-is it optic neuritis?

I had very minor accident in 2020.after few months i started to feel few symptoms on my right side of my body like mild stiffness etc. So I took mri in 2021, doc asked me to ignore , again I took in 2022, same report with same one white spot and in 2023 i took it again (attached here) which has same white spot.I consulted neurologist and she said, the white spot has actually reduced a little bit which is a good news but i am still worried about MS.I took spinal cord MRI too and it is normal , no lesions, EEG is normal. My question is, whenever I exercise or play and look at my watch or mobile display(white text on black background) i see all that text shifted to left and right ) Both eyes are doing it.after sometime , they go to normal, it hppens whenever I am doing stressful exercises.Other things are fine , white text on dark background is the only issue.Is it optic neuritis? I don't know how to read brain MRI, does my brain MRI say i don't have optic neuritis? Please help me