When people drink a lot of water, they sometimes get the sensation that they have to go to the bathroom. However, there is no need to worry that you drank too much water. There is a simple way to figure out if you drank too much water. The first step is to drink a small amount of water. After that, check your pee. If there is less than a cup of urine in the toilet, then you have not drank too much water. If you are still having problems, you can use a pregnancy test. Pregnancy tests are sensitive to a certain level of urine, so if you have a lot of urine, you will have a negative result.