What i have if all exams for ms, including 2 lumbar puncture , are normal.. except the mri shows multiple lesions in my sp. cord and one in brain?

White blobs not all : Ms. Other conditions can cause white areas on MRI including autoimmune disorders (one of the worst being devic's disease) viral & post-viral problems can cause same imaging picture. Some disorders, such as coagulation problems, may not be associated with abnormal spinal fluid yet cause brain & spinal cord problems. Other possibly useful tests could include mr spectroscopy & other immunity studies.

Probable MS: It is likely that the burden of disease is mostly in the cord, but this description alone may well fit most of the mcdonald criteria. Best way to confirm is to get updated mri's with gadolinium. If any area lights up or a new lesion occurs, you have ms, and need treatment. Would urge you see an ms expert at a nearby medical school.