Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
pills change the hormonal levels that control the menstrual cycle. Thus, they tend to change your menstrual cycles and so ovulation days. That is why experts always recommend to chooe routine contraception
over emergency contraception.
Taking another emergency pill now will not help to prevent pregnancy
as 72 hours have passed after unprotected intercourse
. You can take a home pregnancy test like Prega News to test if you are pregnant or not.
These tests are fairly confirmatory. If the test is negative and you keep missing menstruation
, then you should consult a gynecologist for physical examination.
Hope I have answered your query. Let me know if I can assist you further.
Dr. Viraj Ravin Shah