Hello and welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
If she has taken
Plan B pills within 72 hours of unprotected sex, she is well protected from the
pregnancy. Plan B pills do increase the stomach acidity which may cause headache. Some
antacid will give her relief. Please get her urine examined to find out any evidence of urinary infection, if so, she will require a course of appropriate antibiotics for it. Urinary infection can cause frequency of urination. Please report to your gynecologist.
There is no mention about whether she has missed her period or not. However, the period after Plan B may get delayed by few days to a week or so. For confirmation of pregnancy status, you have following options:
1. Perform pregnancy test on overnight morning first urine sample a week after missed period; earlier, the test may report false negative results.
2. Alternatively, she may opt for
Beta hCG test on the blood 10 days after the last
unprotected intercourse.
I hope this clarifies your doubts. Let me know if I can assist you further.
Regards,
Dr. Nishikant Shrotri