The reason it says to wait until morning is because your hormone levels are all higher in the morning. It's not based on how much pee you have in your body, but how high the hormone level is in your pee. So if you want the most accurate results, wait until morning. If the condom broke within the past day or 2, you may still get pregnant but not be pregnant yet. So if it was within the last 72 hours, go get Plan B!