Thanks for the query.
In early pregnancy
sometimes the urine pregnancy test kits may not detect the possibility.
And also just by symptoms we cannot confirm or exclude the pregnancy.
So better to do the test after one week of missed period or you can go for blood test
after missing the period.
If the test comes negative the possibility of pregnancy is less.
And possibly the symptoms you are having could be due to premenstrual syndrome
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429