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Sometimes the urine pregnancy tests come negative in early pregnancy due to less concentration of pregnancy hormone (HCG) in urine. This is called as a false negative test. Look out for other symptoms suggesting early pregnancy like: sore breasts, headache, nausea, increased fatigue, tiredness, sleepiness and hunger, mood swings, constipation, increased frequency of urine and lower abdominal cramps.
Visit your gynecologist/healthcare provider and get a blood beta HCG level test done along with an ultrasound scan to confirm your pregnancy.
Take care.