please help

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I am 24 years old I am a student I have problems with my head (brain) since last 3 years. Symptoms are I am not able to concentrate and it feels like my brain is not able to concentrate and learn new things, also I feeling lost when I was in some conversation. Also I checked to psychiatrist, he says everything is normal and also doctors they told me to do CT scan that was normal.but i was able to crack some army related exam.
then i went to a neurologist. he want me to do MRI. report of which is here:-

BRAIN MRI report on 1.5 tesla 8 channel unit says:
1) subcentrimeteric focal cystic hyperintense foci on T2 & hypointense on T2 FLAIR & T1 with no evidence of blooming on GRE or restricted diffusion on DWI noted in left tegmentum of mid brain & left postero-medial thalamus.-suggestive of chronic ischemic lesion versus prominent virchow robin spaces.
2)rest of cerebral hemisphere show normal MR morphology, signal intensity and grey-white matter diffrentiation.
3)both lateral ventricles and third ventricle are normal in size.
4)cerebellar hemispheres are showing normal MR morphology, signal intensity and outline.
5)fourth ventricle is normal in size and midline in position.
6)basal cistern are normally visualized.
7)no midline shift is seen.
8)sella is normal in size.

Now (since last 2 months)  my symptoms are getting worse (i think i am able to lose my ability to gain new things and even solve simple problems)and also I have pain in my spinal cord and muscle pain in my legs without any exercise(calf and thigh). i have training ahead in just 3-4 months, i dont want to let this job slip from my hands. Please tell me what to do? Please help me.

[ocall]

i have eyes pain too since last 3 months.