Welcome to JustAnswer I am a neurospecialis and will try to answer your question
CAN YOU PLEASE TELL ME WHAT OTHER INFORMATION YOU NEED TO ANSWER
Thank you for your patience.
It is likely that you did have a stroke, and I am glad to see that you are on aspirin. You had a partial recovery of function, with improvement in your speech and typing. The fact that you still have some difficulties would go along with a stroke. You are likely to continue to improve with therapy.
Your high blood pressure and high cholesterol make the risk of a stroke high. It is imperative that you get the MRI to confirm that you have had a stroke, and not another problem like a tumor. The CT scan can miss strokes, especially if they a re relatively small, and the scan is done soon after the problem starts.
It is VERY important that you follow up , and work with your Doctor. The next stroke may be more permanent and more serious, and you may not recover. Be diligent in getting control of your blood pressure, and continue with the aspirin.
Best wishes for improving health.
I hope that helps, and look forward to follow-up questions you may have
It much depends on the MRI scan. A poorly done, incomplete , or artifact laden scan can miss a stroke that is present.
A carefully done, high resolution scan with sequences to look for brain blood flow and injury should pick up a stroke.