Getting glasses

Sarah • 30, SO and I have 8 1/2yr old boy, 6yr old girl and 4yr old boy and expecting another baby 🥰
Can u get glasses while pregnant? I heard your eyes sight changed when your pregnant, is that true? Should I wait till after baby born? With my first when I got an eye exam they told me they do, I just want to make sure before I spend a bunch of money on lens that I won't be able to use after baby born?