The things the OP will probably need are regular medical examination for blood pressure and maybe examination of your blood flow through the neck and within the brain. There also might be thought about your thinking processes.
The questions that may need answers and assessment are your current body and heart conditions, your weight, your food and alcohol consumption, and your current exercise levels, plus if you have any emotional and/or financial stresses.
You don't to have any answers here to any of those questions, but trust me, they are things that will need some sort of reality in dealing with any that might exist.