Thanks for the query.
There should be at-least two months gap between the two emergency pills.
Frequent use of i pill
can lead to short term and short term side effects.
If there is no choice now, you can take this time.
But in future try to use some other regular contraceptive
methods to prevent future complications.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429