If you're asking if these are symptoms of alzheimers, in a general sense, no. When you're under a great deal of stress, it is normal to forget things because you're using up your brain, thinking, either consciously or unconsciously of the stressors.
Mild forgetfulness is normal with advancing age, but healthy older people are usually good at remembering what's most important to them. There is reason for concern if you start forgetting what you were just doing, get lost in your own neighborhood, or start displaying uncharacteristic or inappropriate behavior. If you are always misplacing your keys, it may mean nothing. If you start leaving them in the fridge or the sugar bowl, it may be cause for concern.
One of the most recognizable symptoms of Alzheimer's disease is a speech problem - a person chooses the wrong words, or can't understand simple sentences. Problems with numbers are also common. These are the most reliable signs of early-stage Alzheimer's disease.