What Causes Numbness In The Lips?
I read your question carefully and I understand your concern.
So if I understand you well you have numbness of the entire left side of your body and face which has been present for a week now.
Given the abrupt manner the symptoms have appeared the most likely diagnosis would be a small stroke in the right side of the brain affecting the areas involved in sensation.
Another possibility would be that of multiple sclerosis but less likely to manifest after the age of 50 so less likely.
Other types of brain lesion such as tumor or infection seem less likely.
Anyway it is suggested to see a neurologist or if that takes long your primary physician as soon as possible. You need imaging to confirm the diagnosis and if indeed a stroke is confirmed then admission in order to have further tests regarding the cause is needed.
I remain at your disposal for other questions.