Thank you for posting your query.
I can understand your concern about memory loss
at a very young age. However, the good news is that your CT scan of brain is normal, which rules out any major brain disease, including internal bleeding
As of now, we need to exclude vitamin B12 deficiency
and thyroid hormone deficiency
as possible causes for your symptoms. Both of these can be diagnosed by blood tests.
In addition, anxiety and stress could also produce similar symptoms. So, if you are stressed or anxious, get treated and reduce them.
If the symptoms persist, MRI of brain may be required after consulting a neurologist
I hope it helps. Please get back if you require any additional information.
Wishing you good health,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad, India
Click on this link to ask me a DIRECT QUERY: http://bit.ly/Dr-Sudhir-kumar
My BLOG: http://bestneurodoctor.blogspot.in