White spots while driving

I’ve seen a few ppl say seeing white spots or stars is a sign of preclampsia but I only see white spots when I drive. Like for example if I’m pulling out Or merging into traffic & I look behind me, by the time I look straight I see white spots & it scares me because I’m on the road. It only lasts about 3 seconds. Anyone else going through anything similar? Also, whenever I go to the doctor my blood pressure is normal