It sounds like this has been a very unnerving experience for you. Any kind of change in your health and especially new symptoms like you describe can be very alarming. For right now, you should plan on seeing your primary care doctor
right away to go over everything: your health history, your new symptoms, and your physical exam. If you do start having any trouble breathing, changes in your mental status, blurred vision, blurred speech, or any sudden changes in your strength or balance, you should go to the emergency department right away. Otherwise, you can go over things with your doctor at a regularly scheduled appointment. There are many different things that could be causing your symptoms, and you are absolutely right that with neurological complaints such as change in sensation, a problem with either the central nervous system (the brain and spinal cord) or the peripheral nervous system (the nerves in the rest of your body) could be causing this. Your age and health history will play a big part in identifying possible explanations. In addition, a thorough neurological exam to identify exactly where you are having the sensory deficits--as well as identifying any other abnormalities--will also help pinpoint whether this is something going on in the brain or in the rest of the body. Your doctor may want to refer you to a neurologist
or for additional testing. Good luck!