Actually, every woman is happy and beautiful during the pregnancy, but with this joy, pregnancy causes many hormonal changes in a woman. The body of women may be affected by these changes, including double vision. When you're pregnant, you have more blood circulating in your body and around your eyes. And then your eyes are affected by the same build-up of fluids that may give you thickened ankles or bloating. Your lens and cornea may thicken, and the pressure of the fluid within the eyeball may change. Lastly, these changes together can cause your vision to blur. When you're pregnant, you have more blood circulating in your body and around your eyes.So, you should take out your contacts if you wear usually. Fortunately, this bad condition will be changed into good after several months of giving birth. Keep a inner peace during your pregnancy. Good luck.