Thanks for the query.
Just by symptoms we cannot confirm or rule out the pregnancy
As you missed one pill, there is possibility for pregnancy.
But the symptoms could also be due to the progesterone
So you better go for blood test
for pregnancy once, which can give accurate result compared with urine test.
Depending on the test result you can decide whether to contact the doctor or not.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429