Does high blood pressure mean bed rest for me?

I am currently 27 weeks pregnant with my first child. At my last doctors appointment my bp was a little high so I had to take a 24 hour urine test to test the levels of protien in my urine. This test came back normal and showed no signs of preeclampsia. I am still worried though because at the age of 50 my mother died of a stroke due to high blood pressure. Am I worrying for no reason?