36 weeks Low Fluid

I went to the High Risk doc yesterday and thus far everything had been going smoothly. Well, they told me I have low fluid and I was to rest and drink lot more water. I already drink a lot so this is tough.   I have to go back on Monday to be monitored. Does anyone know what happens if the fluid levels are not back up? Do they induce? Am I given IV fluids? Im googling like a mad woman but you know what that's like.