You need to see your primary doctor ASAP Monday morning. You need to bring your mother with you so that she can describe what she saw as well.
It sounds very possible that you had, what can be called in layman's terms, a minor stroke.
Your mother should have ignored you and called an ambulance immediately and after having trouble with speech, eating and unable to use your left arm to use a knife.
Age, BMI, bodyfat mean nothing. Your history of smoking does. your lack of alcohol is also meaningless as well.
This could have been caused by an undiagnosed heart problem and many other things.
Get to your doctor ASAP and make sure that your doctor knows what has happened in the event you doctor would prefer you go to the ER right away instead.
Good luck and let us know what the doctor says.
Fran