Hello Thanks for your query. As the test is negative, you are mostly not pregnant. Only in a rare situation, conditions like a subtle miscarriage or an ectopic pregnancy cannot be detected by a urine test. IT is better to confirm using a blood test or a pelvic ultrasound scan. Also, conditions like stress, anxiety, hypothyroidism, polycystic ovaries, weight gain, travelling etc can cause a delayed period, even without a pregnancy. It is best to consult a gynecologist as you are desirous of having an issue also. Take care.