What Causes Sudden Tingling Sensation In The Fingers?
Stroke unlikely
Detailed Answer:
I read your question carefully and I understand your concern.
It seems by your description that fingers on both sides are affected (at least you do not specify otherwise. That is an argument against stroke where normally limbs on the one side are affected, not both. Also symptoms involve more of the limb than just the fingers. In addition when strokes presents with sensory symptoms usually it is in the form of loss of sensation, not abnormal sensations such as tingling.
Usually tingling of the fingers is a benign manifestation, not in the setting of something serious. Some metabolic or hormonal issues may at times be at the root reason for which if symptoms persist some blood tests such as electrolyte panel, glucose, liver and kidney function, thyroid function, blood count are advised to screen for such causes. They are routine tests which can be ordered by your primary physician.
However in many cases tests turn back normal and the symptoms are due to anxiety which commonly manifests that way. If (as one might assume by your age) you are undergoing menopause that might contribute as well due to the hormonal changes it brings.
If there appear any new symptoms do not hesitate to write again.