There are hormones that have to do with being pregnant that relax your muscles. This makes food move through your body more slowly.

Later in pregnancy when your uterus is bigger, it is harder to go to the bathroom.

Eat foods with a lot of fiber (whole-grain cereals and breads, brown rice, fruits and veggies).

Drink a lot of water every day.

Work out often (walking or swimming are good options).

Try to go to the bathroom after eating.

If your prenatal vitamin has a lot of iron, try switching to one with less.