Blood pressure?

Normally my blood pressure has never been anything other then 120/60, give or take by one number. Lately I've been having bad headaches, flushed skin, swollen more then normal, feeling really naseous (just the last 3 days) just not feeling good over all. I went and bought a blood pressure machine today and its 109/81... I know, that's normal for people but not for me. I'm also 23 weeks along. I guess I'm wondering if I should just wait until my appointment next Thursday or go to the ER. My husband wants me to go to the ER but its 8pm and I'm honestly just so sick right now.