Blurry vision 20 weeks 4 days

The past 2 hours my eyes have gone really blurry, it’s like there’s smoke everywhere but there’s definitely not. Is this normal during pregnancy? No other obvious issues except very thirsty- but Ive drank loads. I’m 20 w 4D

Edit: thank you everyone for your advice. Turns out I do have high bp so having some monitoring done now! Thanks again 😊