Thanks for the query.
As you missed the pills there is possibility of pregnancy.
So you once go for urine test for pregnancy.
If the test comes negative the amenorrhea
you are having could be a side effect of the pill.
The symptoms you are having could be due to some vaginal infection
So you once consult gynecologist, get examined and take treatment accordingly.
You can once go for ultrasound
to confirmly rule out the pregnancy and to find out the possibility of pelvic infection
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429