Brain Fog. You may be suffering from cognitive dysfunction, "brain fog", brought on by underlying conditions that affect mental function, performance and memory loss. Many times, this may be due to lack of hormones (thyroid, estrogen, testosterone, dhea & pregnenolone) and/or b vitamin deficiencies. Have these evaluated and treated. Most times, your brain function will return.
See below. Common ailment for many, i suggest you can buy a device to track your car by your phone, or write it down.