While a delayed period, sensitive breasts, and lower abdominal pain can sometimes be signs of pregnancy, it is important to note that these symptoms can also be caused by other factors. A negative pregnancy test result does not completely rule out the possibility of pregnancy, as it may take some time for the hormone levels to reach detectable levels. If you suspect you might be pregnant despite the negative test result, it is recommended to consult with a healthcare professional for further evaluation and possibly repeat the test after a few days or weeks. They will be able to provide you with more accurate information based on your specific situation and may suggest additional tests if necessary. It's also worth considering other potential causes for your symptoms such as hormonal imbalances, stress, changes in medication or lifestyle, or underlying health conditions.