Headache, blurred vision

I am 39 weeks and 5 days pregnant. Out of a sudden I got bad headache and blurred vision, I feel dizzy and I am seeing spots.

I measured my blood pressure, my heart was beating like crazy. First three times I could not get measurements (it wrote “error”) and the fourth one was 135/88.

My whole pregnancy I had very low blood pressure (around 90/55).

Should I go to the hospital or are this just some signs of my body preparing for labor?