Sudden high blood pressure

Cara
I'm a littl worried. I have been swelling the past couple weeks. Here in the past couple days I've had sudden nausea and now high blood pressure. I always have low blood pressure but after I called my midwife about an indention in my knee from pressure that wasn't going away she wanted me to check my blood pressure. It's usually on the lower end but was 135/81 and a couple hours later 141/90. She told me to rest and call for an appt tomorrow. I feel pretty weak and nausea. Should I be worried? Has anyone dealt with this? What was the outcome? I have also had period cramps and a lot of Braxton hicks.