Vision changes

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I first started seeing flashing like static lights in my right side of vision then I called the OB on call she asked if I had swelling which I look down and notice swelling in my left foot and ankle but very mild then she told me to go check my blood pressure at a local cvs (she said no to the Apple Watch blood pressure check)

My levels were 111/70

I checked a second time it was 98/69

She said that was normal

I also have gestational diabetes so I checked my blood sugars levels and it was 133

I’m scared I may have preeclampsia.

She said if anything is to get worse or any pain to call her back or go to the ER

I’m 36 weeks pregnant