Ask your eye doctor about ways to lessen your discomfort from dry eyes. Artificial tears may help, but ask your doctor which ones are safe to use during pregnancy. If you wear contact lenses, you may try wearing them for shorter lengths of time, or switch to glasses for the time being. Cleaning your contacts more often may also help.
If you work at a computer, taking frequent breaks can also help with dry eyes. Staring at a computer screen may cause you not blink as often as usual, causing dryness and irritation.