@SarahGen-- How bad is it?
If the pink eye symptoms are very bad, see your doctor and have him or her prescribe oral antibiotics that are safe during pregnancy. The pink eye will resolve faster. If you don't get it treated, it can take a very long time to go away and it may affect your vision.
Also, wash your hands often, especially after touching your eye. Avoid contact with others and change your pillowcase frequently.