loosing coordination in my left arm.

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.
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)
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) 
It's really scaring me.