High blood pressure

Hi, I'm 34 w 4 days and I have been overnight in the hospital to monitor my blood pressure because it was high. I don't have preclampsia, but yesterday I was experiencing bad headaches so I checked my blood pressure with my husbands blood pressure machine and last night it was 137/80 and today it was 151/110. I'm planning on checking a few more times to see if it stays high before I do anything, but isn't 151/110 a little to high?