loosing coordination in my left arm.

Symptoms:
Left arm is extremely week.
Coordination in left arm is gone.
Waves of nausea.
Extreme dizziness.
2 fainting spells in the last 3 days.
Vison problems.
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Doctor said two days ago:
Try pedialyte.
Don't eat anything too sugary.
And I took my own BP and it was fine (129/72)
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I've been feeling this way for almost a week and it hasn't got any better. I have a regular follow up appointment tomorrow, but I'm wondering if I should seek treatment today (urgent care or ER) 
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It's really scaring me.