I got a negative result with the digital clear blue pregnancy test but my urine was 11 hours old. could that be why It negative. also tested on Thursday and period is due Sunday?

It is possible that the negative result you received with the digital clear blue pregnancy test could be due to the fact that your urine was 11 hours old. Pregnancy tests are generally most accurate when taken with first morning urine, as this is when the concentration of human chorionic gonadotropin (hCG) hormone in the urine is highest. hCG is the hormone produced by the developing placenta after implantation occurs, and its levels rise rapidly in early pregnancy.

When urine is left for an extended period of time, the concentration of hCG may decrease, which can affect the accuracy of the pregnancy test. Additionally, certain medications, medical conditions, and certain foods and beverages can also interfere with the accuracy of pregnancy tests.

Given that you tested on Thursday and your period is due on Sunday, it is still possible that you may be pregnant. If you are concerned about the results of your pregnancy test or if you experience any other symptoms of pregnancy, such as breast tenderness, nausea, or fatigue, it is important to consult with a healthcare professional. They can perform a blood test to accurately determine your pregnancy status.