Signs of preclampsia?

Alyson • I have a 1 year old son and currently pregnant again due May 5th 2016 ♡
I've been having spells of blurred vision, dizziness, racing heart beat, and my left arm and left side of my face went numb for a matter of 5 minutes. I felt like I was on the verge of passing out. I'll be 19 weeks tomorrow. Is it something I should go to the ER about or just contact my doctor?