Dizzyness

I’m 28 weeks. Throughout the last week or so I’ve been having more dizzyness spells. I’d say it started one every few days, but now about 2 a day for the past few days. I checked my blood pressure & it was 111/73. There’s no vomiting or anything with it, I do have a headache when it’s over but I’d say that’s the only symptoms.

I really don’t want to go to l&d if it’s not necessary, but is there cause for concerns? Otherwise I’ll call my doc in the morning when they open.