Headaches, Swelling, backache during pregnancy

Patient: I am currently 31 weeks pregnant. I have had a persistent headache for the past 4 days. I am also experiencing lower back pain, and some pretty bad swelling in my hands, face, and feet. I have been drinking 5 or 6 bottles of water per day. My blood pressure was 142/88 today. Should I call my OB DR.?

Symptoms: Headaches, Swelling, backache during pregnancy

Doctor: