I understand your concerns.
During flight ride, you may have kept your arm in such a way causing pressure on the brachial plexus located around the arm pit region.
This an result in numbness, tingling and also brief period of weakness of hand.
The return of symptoms over time expected and so far this is not concerning.
Heart and stroke related symptoms will not subside so fast, uncommon at your age group and usually accompanied by other symptoms like chest pain, shortness of breath etc.
You should also discuss with your doctor.
Do not worry, your symptoms should disappear completely in next 2-3 days.
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