Sis, please go to your OB or emergency room right away to get checked properly, dizziness near your due date needs professional assessment, hindi kami pwedeng mag-assess online!
Your doctor needs to monitor you and baby especially since you're already dilating (1cm), iba-iba ang signs ng bawat mama, kaya better safe than sorry talaga. A few of us moms in the group had similar experiences and mas okay ang lahat pagpunta agad sa hospital. Hoping you and baby are safe, please update us after you see your OB!